90398397 has 4 divisors (see below), whose sum is σ = 120531200. Its totient is φ = 60265596.

The previous prime is 90398393. The next prime is 90398419. The reversal of 90398397 is 79389309.

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 not a de Polignac number, because 90398397 - 2² = 90398393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90398393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15066397 + ... + 15066402.

It is an arithmetic number, because the mean of its divisors is an integer number (30132800).

Almost surely, 2^90398397 is an apocalyptic number.

It is an amenable number.

90398397 is a deficient number, since it is larger than the sum of its proper divisors (30132803).

90398397 is a wasteful number, since it uses less digits than its factorization.

90398397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30132802.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 90398397 is about 9507.8071604340. The cubic root of 90398397 is about 448.8007525303.

The spelling of 90398397 in words is "ninety million, three hundred ninety-eight thousand, three hundred ninety-seven".