398296087 has 8 divisors (see below), whose sum is σ = 457011072. Its totient is φ = 340035000.

The previous prime is 398296033. The next prime is 398296097. The reversal of 398296087 is 780692893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398296087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398296097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111589 + ... + 115102.

It is an arithmetic number, because the mean of its divisors is an integer number (57126384).

Almost surely, 2^398296087 is an apocalyptic number.

398296087 is a deficient number, since it is larger than the sum of its proper divisors (58714985).

398296087 is a wasteful number, since it uses less digits than its factorization.

398296087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226949.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 398296087 is about 19957.3567137535. The cubic root of 398296087 is about 735.7585991308.

The spelling of 398296087 in words is "three hundred ninety-eight million, two hundred ninety-six thousand, eighty-seven".