90389098 has 4 divisors (see below), whose sum is σ = 135583650. Its totient is φ = 45194548.

The previous prime is 90389081. The next prime is 90389141. The reversal of 90389098 is 89098309.

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

It can be written as a sum of positive squares in only one way, i.e., 86918329 + 3470769 = 9323^2 + 1863^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22597273 + ... + 22597276.

Almost surely, 2^90389098 is an apocalyptic number.

90389098 is a deficient number, since it is larger than the sum of its proper divisors (45194552).

90389098 is a wasteful number, since it uses less digits than its factorization.

90389098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45194551.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 90389098 is about 9507.3181286838. The cubic root of 90389098 is about 448.7853630933.

The spelling of 90389098 in words is "ninety million, three hundred eighty-nine thousand, ninety-eight".