398114865 has 64 divisors (see below), whose sum is σ = 735436800. Its totient is φ = 204120000.

The previous prime is 398114851. The next prime is 398114887. The reversal of 398114865 is 568411893.

It is not a de Polignac number, because 398114865 - 2¹³ = 398106673 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 398114865.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1050246 + ... + 1050624.

It is an arithmetic number, because the mean of its divisors is an integer number (11491200).

Almost surely, 2^398114865 is an apocalyptic number.

It is an amenable number.

398114865 is a deficient number, since it is larger than the sum of its proper divisors (337321935).

398114865 is a wasteful number, since it uses less digits than its factorization.

398114865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 669 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 398114865 is about 19952.8159666750. The cubic root of 398114865 is about 735.6469938229.

The spelling of 398114865 in words is "three hundred ninety-eight million, one hundred fourteen thousand, eight hundred sixty-five".