90190398 has 8 divisors (see below), whose sum is σ = 180380808. Its totient is φ = 30063464.

The previous prime is 90190363. The next prime is 90190411. The reversal of 90190398 is 89309109.

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

90190398 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7515861 + ... + 7515872.

It is an arithmetic number, because the mean of its divisors is an integer number (22547601).

Almost surely, 2^90190398 is an apocalyptic number.

90190398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90190398 is a wasteful number, since it uses less digits than its factorization.

90190398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15031738.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 90190398 is about 9496.8625345427. The cubic root of 90190398 is about 448.4562707719.

The spelling of 90190398 in words is "ninety million, one hundred ninety thousand, three hundred ninety-eight".