3892875021 has 72 divisors (see below), whose sum is σ = 6973699200. Its totient is φ = 2080391040.

The previous prime is 3892874989. The next prime is 3892875023. The reversal of 3892875021 is 1205782983.

It is a happy number.

It is not a de Polignac number, because 3892875021 - 2⁵ = 3892874989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3892875023) 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 71 ways as a sum of consecutive naturals, for example, 659001 + ... + 664881.

Almost surely, 2^3892875021 is an apocalyptic number.

It is an amenable number.

3892875021 is a deficient number, since it is larger than the sum of its proper divisors (3080824179).

3892875021 is a wasteful number, since it uses less digits than its factorization.

3892875021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5999 (or 5989 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 3892875021 is about 62392.9084191465. The cubic root of 3892875021 is about 1573.1017723891.

The spelling of 3892875021 in words is "three billion, eight hundred ninety-two million, eight hundred seventy-five thousand, twenty-one".