399672466765 has 64 divisors (see below), whose sum is σ = 565907715072. Its totient is φ = 267146035200.

The previous prime is 399672466759. The next prime is 399672466769. The reversal of 399672466765 is 567664276993.

It is not a de Polignac number, because 399672466765 - 2⁷ = 399672466637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399672466694 and 399672466703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399672466769) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 302552305 + ... + 302553625.

It is an arithmetic number, because the mean of its divisors is an integer number (8842308048).

Almost surely, 2^399672466765 is an apocalyptic number.

It is an amenable number.

399672466765 is a deficient number, since it is larger than the sum of its proper divisors (166235248307).

399672466765 is a wasteful number, since it uses less digits than its factorization.

399672466765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870.

The product of its digits is 617258880, while the sum is 70.

The spelling of 399672466765 in words is "three hundred ninety-nine billion, six hundred seventy-two million, four hundred sixty-six thousand, seven hundred sixty-five".