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3940361 = 8774493
BaseRepresentation
bin1111000010000000001001
321102012011022
433002000021
52002042421
6220242225
745330635
oct17020011
97365138
103940361
1122514a7
1213a0375
13a7c699
14747dc5
1552c7ab
hex3c2009

3940361 has 4 divisors (see below), whose sum is σ = 3945732. Its totient is φ = 3934992.

The previous prime is 3940351. The next prime is 3940367. The reversal of 3940361 is 1630493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1630493 = 2370891.

It can be written as a sum of positive squares in 2 ways, for example, as 3728761 + 211600 = 1931^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 3940361 - 210 = 3939337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3940361.

It is not an unprimeable number, because it can be changed into a prime (3940367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370 + ... + 3123.

It is an arithmetic number, because the mean of its divisors is an integer number (986433).

Almost surely, 23940361 is an apocalyptic number.

It is an amenable number.

3940361 is a deficient number, since it is larger than the sum of its proper divisors (5371).

3940361 is an equidigital number, since it uses as much as digits as its factorization.

3940361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 3940361 is about 1985.0342566314. The cubic root of 3940361 is about 157.9472264065.

The spelling of 3940361 in words is "three million, nine hundred forty thousand, three hundred sixty-one".

Divisors: 1 877 4493 3940361