3997147890287 has 2 divisors, whose sum is σ = 3997147890288. Its totient is φ = 3997147890286.

The previous prime is 3997147890277. The next prime is 3997147890389. The reversal of 3997147890287 is 7820987417993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3997147890287 - 2²⁶ = 3997080781423 is a prime.

It is a super-3 number, since 3×3997147890287³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3997147890277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998573945143 + 1998573945144.

It is an arithmetic number, because the mean of its divisors is an integer number (1998573945144).

Almost surely, 2^{3997147890287} is an apocalyptic number.

3997147890287 is a deficient number, since it is larger than the sum of its proper divisors (1).

3997147890287 is an equidigital number, since it uses as much as digits as its factorization.

3997147890287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384072192, while the sum is 74.

The spelling of 3997147890287 in words is "three trillion, nine hundred ninety-seven billion, one hundred forty-seven million, eight hundred ninety thousand, two hundred eighty-seven".