3920900 has 18 divisors (see below), whose sum is σ = 8508570. Its totient is φ = 1568320.

The previous prime is 3920899. The next prime is 3920909. The reversal of 3920900 is 90293.

It can be written as a sum of positive squares in 3 ways, for example, as 1044484 + 2876416 = 1022^2 + 1696^2 .

It is a super-3 number, since 3×3920900³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19505 + ... + 19704.

Almost surely, 2^3920900 is an apocalyptic number.

It is an amenable number.

3920900 is an abundant number, since it is smaller than the sum of its proper divisors (4587670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3920900 is a wasteful number, since it uses less digits than its factorization.

3920900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39223 (or 39216 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 3920900 is about 1980.1262586007. The cubic root of 3920900 is about 157.6867692803.

The spelling of 3920900 in words is "three million, nine hundred twenty thousand, nine hundred".