398715115 has 16 divisors (see below), whose sum is σ = 483384096. Its totient is φ = 315705600.

The previous prime is 398715091. The next prime is 398715139. The reversal of 398715115 is 511517893.

It is an interprime number because it is at equal distance from previous prime (398715091) and next prime (398715139).

It is not a de Polignac number, because 398715115 - 2¹⁹ = 398190827 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, 228145 + ... + 229885.

It is an arithmetic number, because the mean of its divisors is an integer number (30211506).

Almost surely, 2^398715115 is an apocalyptic number.

398715115 is a deficient number, since it is larger than the sum of its proper divisors (84668981).

398715115 is a wasteful number, since it uses less digits than its factorization.

398715115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190.

The product of its digits is 37800, while the sum is 40.

The square root of 398715115 is about 19967.8520377130. The cubic root of 398715115 is about 736.0165273492.

The spelling of 398715115 in words is "three hundred ninety-eight million, seven hundred fifteen thousand, one hundred fifteen".