399468460 has 12 divisors (see below), whose sum is σ = 838883808. Its totient is φ = 159787376.

The previous prime is 399468457. The next prime is 399468469. The reversal of 399468460 is 64864993.

It is not an unprimeable number, because it can be changed into a prime (399468469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9986692 + ... + 9986731.

It is an arithmetic number, because the mean of its divisors is an integer number (69906984).

Almost surely, 2^399468460 is an apocalyptic number.

It is an amenable number.

399468460 is an abundant number, since it is smaller than the sum of its proper divisors (439415348).

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

399468460 is a wasteful number, since it uses less digits than its factorization.

399468460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19973432 (or 19973430 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 399468460 is about 19986.7070824586. The cubic root of 399468460 is about 736.4797867059.

The spelling of 399468460 in words is "three hundred ninety-nine million, four hundred sixty-eight thousand, four hundred sixty".