399672334548 has 36 divisors (see below), whose sum is σ = 1012753012180. Its totient is φ = 132898375296.

The previous prime is 399672334547. The next prime is 399672334553. The reversal of 399672334548 is 845433276993.

399672334548 is a `hidden beast` number, since 3 + 9 + 9 + 67 + 23 + 3 + 4 + 548 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 335644105104 + 64028229444 = 579348^2 + 253038^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399672334547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13557415 + ... + 13586862.

Almost surely, 2^399672334548 is an apocalyptic number.

It is an amenable number.

399672334548 is an abundant number, since it is smaller than the sum of its proper divisors (613080677632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399672334548 is a wasteful number, since it uses less digits than its factorization.

399672334548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27144696 (or 27144691 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 63.

The spelling of 399672334548 in words is "three hundred ninety-nine billion, six hundred seventy-two million, three hundred thirty-four thousand, five hundred forty-eight".