399960115187 has 2 divisors, whose sum is σ = 399960115188. Its totient is φ = 399960115186.

The previous prime is 399960115147. The next prime is 399960115211. The reversal of 399960115187 is 781511069993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 399960115187 - 2²² = 399955920883 is a prime.

It is not a weakly prime, because it can be changed into another prime (399960115127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199980057593 + 199980057594.

It is an arithmetic number, because the mean of its divisors is an integer number (199980057594).

Almost surely, 2^399960115187 is an apocalyptic number.

399960115187 is a deficient number, since it is larger than the sum of its proper divisors (1).

399960115187 is an equidigital number, since it uses as much as digits as its factorization.

399960115187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 59.

The spelling of 399960115187 in words is "three hundred ninety-nine billion, nine hundred sixty million, one hundred fifteen thousand, one hundred eighty-seven".