90389199 has 4 divisors (see below), whose sum is σ = 120518936. Its totient is φ = 60259464.

The previous prime is 90389197. The next prime is 90389203. The reversal of 90389199 is 99198309.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90389199 - 2¹ = 90389197 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 (90389197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15064864 + ... + 15064869.

It is an arithmetic number, because the mean of its divisors is an integer number (30129734).

Almost surely, 2^90389199 is an apocalyptic number.

90389199 is a deficient number, since it is larger than the sum of its proper divisors (30129737).

90389199 is a wasteful number, since it uses less digits than its factorization.

90389199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30129736.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 90389199 is about 9507.3234403801. The cubic root of 90389199 is about 448.7855302496.

The spelling of 90389199 in words is "ninety million, three hundred eighty-nine thousand, one hundred ninety-nine".