399641935461 has 8 divisors (see below), whose sum is σ = 532883028960. Its totient is φ = 266414399472.

The previous prime is 399641935417. The next prime is 399641935487. The reversal of 399641935461 is 164539146993.

It is a happy number.

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

It is not a de Polignac number, because 399641935461 - 2²⁹ = 399105064549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399641935395 and 399641935404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399641935361) 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, 3320395 + ... + 3438648.

It is an arithmetic number, because the mean of its divisors is an integer number (66610378620).

Almost surely, 2^399641935461 is an apocalyptic number.

It is an amenable number.

399641935461 is a deficient number, since it is larger than the sum of its proper divisors (133241093499).

399641935461 is a wasteful number, since it uses less digits than its factorization.

399641935461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778755.

The product of its digits is 18895680, while the sum is 60.

The spelling of 399641935461 in words is "three hundred ninety-nine billion, six hundred forty-one million, nine hundred thirty-five thousand, four hundred sixty-one".