3920893840 has 40 divisors (see below), whose sum is σ = 9163842048. Its totient is φ = 1560140160.

The previous prime is 3920893813. The next prime is 3920893849. The reversal of 3920893840 is 483980293.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (3920893849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113022 + ... + 143581.

Almost surely, 2^3920893840 is an apocalyptic number.

It is an amenable number.

3920893840 is an abundant number, since it is smaller than the sum of its proper divisors (5242948208).

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

3920893840 is a wasteful number, since it uses less digits than its factorization.

3920893840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256807 (or 256801 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 3920893840 is about 62617.0411309893. The cubic root of 3920893840 is about 1576.8668670139.

The spelling of 3920893840 in words is "three billion, nine hundred twenty million, eight hundred ninety-three thousand, eight hundred forty".