398634064 has 20 divisors (see below), whose sum is σ = 779575104. Its totient is φ = 197453408.

The previous prime is 398634043. The next prime is 398634101. The reversal of 398634064 is 460436893.

It is a self number, because there is not a number n which added to its sum of digits gives 398634064.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114712 + ... + 118135.

Almost surely, 2^398634064 is an apocalyptic number.

It is an amenable number.

398634064 is a deficient number, since it is larger than the sum of its proper divisors (380941040).

398634064 is a wasteful number, since it uses less digits than its factorization.

398634064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232962 (or 232956 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 398634064 is about 19965.8223972868. The cubic root of 398634064 is about 735.9666513718.

The spelling of 398634064 in words is "three hundred ninety-eight million, six hundred thirty-four thousand, sixty-four".