90897898 has 16 divisors (see below), whose sum is σ = 167811840. Its totient is φ = 35959536.

The previous prime is 90897871. The next prime is 90897907. The reversal of 90897898 is 89879809.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249538 + ... + 249901.

It is an arithmetic number, because the mean of its divisors is an integer number (10488240).

Almost surely, 2^90897898 is an apocalyptic number.

90897898 is a deficient number, since it is larger than the sum of its proper divisors (76913942).

90897898 is a wasteful number, since it uses less digits than its factorization.

90897898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499461.

The product of its (nonzero) digits is 2612736, while the sum is 58.

The square root of 90897898 is about 9534.0389132833. The cubic root of 90897898 is about 449.6258585628.

The spelling of 90897898 in words is "ninety million, eight hundred ninety-seven thousand, eight hundred ninety-eight".