399746679575 has 48 divisors (see below), whose sum is σ = 526014324000. Its totient is φ = 300507863040.

The previous prime is 399746679551. The next prime is 399746679589. The reversal of 399746679575 is 575976647993.

It is not a de Polignac number, because 399746679575 - 2³⁶ = 331027202839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 399746679496 and 399746679505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134638691 + ... + 134641659.

It is an arithmetic number, because the mean of its divisors is an integer number (10958631750).

Almost surely, 2^399746679575 is an apocalyptic number.

399746679575 is a deficient number, since it is larger than the sum of its proper divisors (126267644425).

399746679575 is a wasteful number, since it uses less digits than its factorization.

399746679575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204 (or 5199 counting only the distinct ones).

The product of its digits is 2700507600, while the sum is 77.

The spelling of 399746679575 in words is "three hundred ninety-nine billion, seven hundred forty-six million, six hundred seventy-nine thousand, five hundred seventy-five".