3920245 has 12 divisors (see below), whose sum is σ = 5472684. Its totient is φ = 2688000.

The previous prime is 3920243. The next prime is 3920263. The reversal of 3920245 is 5420293.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2436721 + 1483524 = 1561^2 + 1218^2 .

It is not a de Polignac number, because 3920245 - 2¹ = 3920243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7756 + ... + 8245.

It is an arithmetic number, because the mean of its divisors is an integer number (456057).

Almost surely, 2^3920245 is an apocalyptic number.

3920245 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3920245 is a deficient number, since it is larger than the sum of its proper divisors (1552439).

3920245 is a wasteful number, since it uses less digits than its factorization.

3920245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16020 (or 16013 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 3920245 is about 1979.9608581990. The cubic root of 3920245 is about 157.6779880833.

It can be divided in two parts, 3920 and 245, that multiplied together give a square (960400 = 980²).

The spelling of 3920245 in words is "three million, nine hundred twenty thousand, two hundred forty-five".