399632633797 has 8 divisors (see below), whose sum is σ = 399930574176. Its totient is φ = 399334805232.

The previous prime is 399632633791. The next prime is 399632633837. The reversal of 399632633797 is 797336236993.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-399632633797 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 (399632633791) 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, 7947978 + ... + 7998100.

It is an arithmetic number, because the mean of its divisors is an integer number (49991321772).

Almost surely, 2^399632633797 is an apocalyptic number.

It is an amenable number.

399632633797 is a deficient number, since it is larger than the sum of its proper divisors (297940379).

399632633797 is a wasteful number, since it uses less digits than its factorization.

399632633797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55907.

The product of its digits is 208324872, while the sum is 67.

The spelling of 399632633797 in words is "three hundred ninety-nine billion, six hundred thirty-two million, six hundred thirty-three thousand, seven hundred ninety-seven".