3997147890285 has 96 divisors (see below), whose sum is σ = 7858696083840. Its totient is φ = 1926120176640.

The previous prime is 3997147890277. The next prime is 3997147890287. The reversal of 3997147890285 is 5820987417993.

3997147890285 is a `hidden beast` number, since 3 + 9 + 9 + 71 + 478 + 9 + 0 + 2 + 85 = 666.

It is not a de Polignac number, because 3997147890285 - 2³ = 3997147890277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997147890287) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1911997 + ... + 3413213.

It is an arithmetic number, because the mean of its divisors is an integer number (81861417540).

Almost surely, 2^{3997147890285} is an apocalyptic number.

It is an amenable number.

3997147890285 is a deficient number, since it is larger than the sum of its proper divisors (3861548193555).

3997147890285 is a wasteful number, since it uses less digits than its factorization.

3997147890285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501416 (or 1501399 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 72.

The spelling of 3997147890285 in words is "three trillion, nine hundred ninety-seven billion, one hundred forty-seven million, eight hundred ninety thousand, two hundred eighty-five".