3928940365 has 32 divisors (see below), whose sum is σ = 5696421120. Its totient is φ = 2541279744.

The previous prime is 3928940357. The next prime is 3928940377. The reversal of 3928940365 is 5630498293.

It is a cyclic number.

It is not a de Polignac number, because 3928940365 - 2³ = 3928940357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142267 + ... + 167623.

It is an arithmetic number, because the mean of its divisors is an integer number (178013160).

Almost surely, 2^3928940365 is an apocalyptic number.

3928940365 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3928940365 is a deficient number, since it is larger than the sum of its proper divisors (1767480755).

3928940365 is a wasteful number, since it uses less digits than its factorization.

3928940365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25621.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The square root of 3928940365 is about 62681.2600782722. The cubic root of 3928940365 is about 1577.9448209493.

The spelling of 3928940365 in words is "three billion, nine hundred twenty-eight million, nine hundred forty thousand, three hundred sixty-five".