91242898 has 4 divisors (see below), whose sum is σ = 136864350. Its totient is φ = 45621448.

The previous prime is 91242871. The next prime is 91242901. The reversal of 91242898 is 89824219.

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., 89927289 + 1315609 = 9483^2 + 1147^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22810723 + ... + 22810726.

Almost surely, 2^91242898 is an apocalyptic number.

91242898 is a deficient number, since it is larger than the sum of its proper divisors (45621452).

91242898 is a wasteful number, since it uses less digits than its factorization.

91242898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45621451.

The product of its digits is 82944, while the sum is 43.

The square root of 91242898 is about 9552.1148443682. The cubic root of 91242898 is about 450.1939871454.

The spelling of 91242898 in words is "ninety-one million, two hundred forty-two thousand, eight hundred ninety-eight".