3987512923 has 2 divisors, whose sum is σ = 3987512924. Its totient is φ = 3987512922.

The previous prime is 3987512897. The next prime is 3987512927. The reversal of 3987512923 is 3292157893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3987512923 - 2²⁹ = 3450642011 is a prime.

It is a super-2 number, since 2×3987512923² = 31800518622184007858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3987512927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993756461 + 1993756462.

It is an arithmetic number, because the mean of its divisors is an integer number (1993756462).

Almost surely, 2^3987512923 is an apocalyptic number.

3987512923 is a deficient number, since it is larger than the sum of its proper divisors (1).

3987512923 is an equidigital number, since it uses as much as digits as its factorization.

3987512923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 3987512923 is about 63146.7570267864. The cubic root of 3987512923 is about 1585.7474968363.

The spelling of 3987512923 in words is "three billion, nine hundred eighty-seven million, five hundred twelve thousand, nine hundred twenty-three".