399459629551 has 8 divisors (see below), whose sum is σ = 420602038400. Its totient is φ = 378329042520.

The previous prime is 399459629479. The next prime is 399459629629. The reversal of 399459629551 is 155926954993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399459629551 - 2¹³ = 399459621359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399459629351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2886045 + ... + 3021286.

It is an arithmetic number, because the mean of its divisors is an integer number (52575254800).

Almost surely, 2^399459629551 is an apocalyptic number.

399459629551 is a deficient number, since it is larger than the sum of its proper divisors (21142408849).

399459629551 is a wasteful number, since it uses less digits than its factorization.

399459629551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910909.

The product of its digits is 118098000, while the sum is 67.

The spelling of 399459629551 in words is "three hundred ninety-nine billion, four hundred fifty-nine million, six hundred twenty-nine thousand, five hundred fifty-one".