90039398 has 4 divisors (see below), whose sum is σ = 135059100. Its totient is φ = 45019698.

The previous prime is 90039371. The next prime is 90039401. The reversal of 90039398 is 89393009.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22509848 + ... + 22509851.

It is an arithmetic number, because the mean of its divisors is an integer number (33764775).

Almost surely, 2^90039398 is an apocalyptic number.

90039398 is a deficient number, since it is larger than the sum of its proper divisors (45019702).

90039398 is a wasteful number, since it uses less digits than its factorization.

90039398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45019701.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 90039398 is about 9488.9092102306. The cubic root of 90039398 is about 448.2058571103.

The spelling of 90039398 in words is "ninety million, thirty-nine thousand, three hundred ninety-eight".