3920461 has 4 divisors (see below), whose sum is σ = 4016124. Its totient is φ = 3824800.

The previous prime is 3920459. The next prime is 3920467. The reversal of 3920461 is 1640293.

3920461 = 289² + 290² + ... + 329².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1640293 = 643 ⋅2551.

It can be written as a sum of positive squares in 2 ways, for example, as 1010025 + 2910436 = 1005^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 3920461 - 2¹ = 3920459 is a prime.

It is a Duffinian number.

3920461 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47770 + ... + 47851.

It is an arithmetic number, because the mean of its divisors is an integer number (1004031).

Almost surely, 2^3920461 is an apocalyptic number.

It is an amenable number.

3920461 is a deficient number, since it is larger than the sum of its proper divisors (95663).

3920461 is an equidigital number, since it uses as much as digits as its factorization.

3920461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95662.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3920461 is about 1980.0154039805. The cubic root of 3920461 is about 157.6808839755.

The spelling of 3920461 in words is "three million, nine hundred twenty thousand, four hundred sixty-one".