398562764 has 6 divisors (see below), whose sum is σ = 697484844. Its totient is φ = 199281380.

The previous prime is 398562761. The next prime is 398562781. The reversal of 398562764 is 467265893.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (398562761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49820342 + ... + 49820349.

It is an arithmetic number, because the mean of its divisors is an integer number (116247474).

Almost surely, 2^398562764 is an apocalyptic number.

It is an amenable number.

398562764 is a deficient number, since it is larger than the sum of its proper divisors (298922080).

398562764 is a wasteful number, since it uses less digits than its factorization.

398562764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99640695 (or 99640693 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The square root of 398562764 is about 19964.0367661453. The cubic root of 398562764 is about 735.9227702321.

The spelling of 398562764 in words is "three hundred ninety-eight million, five hundred sixty-two thousand, seven hundred sixty-four".