396215398 has 16 divisors (see below), whose sum is σ = 626166000. Its totient is φ = 187512192.

The previous prime is 396215387. The next prime is 396215401. The reversal of 396215398 is 893512693.

It is a happy number.

It is a super-2 number, since 2×396215398² = 313973283224596808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44938 + ... + 53026.

It is an arithmetic number, because the mean of its divisors is an integer number (39135375).

Almost surely, 2^396215398 is an apocalyptic number.

396215398 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

396215398 is a deficient number, since it is larger than the sum of its proper divisors (229950602).

396215398 is a wasteful number, since it uses less digits than its factorization.

396215398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9399.

The product of its digits is 349920, while the sum is 46.

The square root of 396215398 is about 19905.1600847619. The cubic root of 396215398 is about 734.4751666912.

The spelling of 396215398 in words is "three hundred ninety-six million, two hundred fifteen thousand, three hundred ninety-eight".