90972298 has 4 divisors (see below), whose sum is σ = 136458450. Its totient is φ = 45486148.

The previous prime is 90972269. The next prime is 90972313. The reversal of 90972298 is 89227909.

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., 85322169 + 5650129 = 9237^2 + 2377^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22743073 + ... + 22743076.

Almost surely, 2^90972298 is an apocalyptic number.

90972298 is a deficient number, since it is larger than the sum of its proper divisors (45486152).

90972298 is a wasteful number, since it uses less digits than its factorization.

90972298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45486151.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 90972298 is about 9537.9399243233. The cubic root of 90972298 is about 449.7484981467.

The spelling of 90972298 in words is "ninety million, nine hundred seventy-two thousand, two hundred ninety-eight".