399184074 has 12 divisors (see below), whose sum is σ = 864898866. Its totient is φ = 133061352.

The previous prime is 399184073. The next prime is 399184099. The reversal of 399184074 is 470481993.

It can be written as a sum of positive squares in only one way, i.e., 284158449 + 115025625 = 16857^2 + 10725^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (399184073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11088429 + ... + 11088464.

Almost surely, 2^399184074 is an apocalyptic number.

399184074 is an abundant number, since it is smaller than the sum of its proper divisors (465714792).

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

399184074 is a wasteful number, since it uses less digits than its factorization.

399184074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22176901 (or 22176898 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 399184074 is about 19979.5914372642. The cubic root of 399184074 is about 736.3049758567.

The spelling of 399184074 in words is "three hundred ninety-nine million, one hundred eighty-four thousand, seventy-four".