398468915 has 16 divisors (see below), whose sum is σ = 516867456. Its totient is φ = 293155200.

The previous prime is 398468909. The next prime is 398468921. The reversal of 398468915 is 519864893.

It is an interprime number because it is at equal distance from previous prime (398468909) and next prime (398468921).

It is not a de Polignac number, because 398468915 - 2¹⁴ = 398452531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6305 + ... + 28925.

It is an arithmetic number, because the mean of its divisors is an integer number (32304216).

Almost surely, 2^398468915 is an apocalyptic number.

398468915 is a deficient number, since it is larger than the sum of its proper divisors (118398541).

398468915 is a wasteful number, since it uses less digits than its factorization.

398468915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22910.

The product of its digits is 1866240, while the sum is 53.

The square root of 398468915 is about 19961.6861762728. The cubic root of 398468915 is about 735.8650034729.

The spelling of 398468915 in words is "three hundred ninety-eight million, four hundred sixty-eight thousand, nine hundred fifteen".