398064913 has 4 divisors (see below), whose sum is σ = 398178880. Its totient is φ = 397950948.

The previous prime is 398064899. The next prime is 398064943. The reversal of 398064913 is 319460893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 319460893 = 2281 ⋅140053.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398064913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398064913.

It is not an unprimeable number, because it can be changed into a prime (398064943) 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, 51573 + ... + 58786.

It is an arithmetic number, because the mean of its divisors is an integer number (99544720).

Almost surely, 2^398064913 is an apocalyptic number.

It is an amenable number.

398064913 is a deficient number, since it is larger than the sum of its proper divisors (113967).

398064913 is a wasteful number, since it uses less digits than its factorization.

398064913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113966.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 398064913 is about 19951.5641742696. The cubic root of 398064913 is about 735.6162250014.

The spelling of 398064913 in words is "three hundred ninety-eight million, sixty-four thousand, nine hundred thirteen".