399054560 has 24 divisors (see below), whose sum is σ = 942766776. Its totient is φ = 159621760.

The previous prime is 399054553. The next prime is 399054569. The reversal of 399054560 is 65450993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399054569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246886 + ... + 1247205.

It is an arithmetic number, because the mean of its divisors is an integer number (39281949).

Almost surely, 2^399054560 is an apocalyptic number.

It is an amenable number.

399054560 is an abundant number, since it is smaller than the sum of its proper divisors (543712216).

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

399054560 is a wasteful number, since it uses less digits than its factorization.

399054560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494106 (or 2494098 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 399054560 is about 19976.3500169576. The cubic root of 399054560 is about 736.2253366426.

The spelling of 399054560 in words is "three hundred ninety-nine million, fifty-four thousand, five hundred sixty".