398599297 has 4 divisors (see below), whose sum is σ = 399256576. Its totient is φ = 397942020.

The previous prime is 398599291. The next prime is 398599303. The reversal of 398599297 is 792995893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (398599291) and next prime (398599303).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398599297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398599291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327729 + ... + 328942.

It is an arithmetic number, because the mean of its divisors is an integer number (99814144).

Almost surely, 2^398599297 is an apocalyptic number.

It is an amenable number.

398599297 is a deficient number, since it is larger than the sum of its proper divisors (657279).

398599297 is an equidigital number, since it uses as much as digits as its factorization.

398599297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657278.

The product of its digits is 11022480, while the sum is 61.

The square root of 398599297 is about 19964.9517154437. The cubic root of 398599297 is about 735.9452548925.

The spelling of 398599297 in words is "three hundred ninety-eight million, five hundred ninety-nine thousand, two hundred ninety-seven".