91873098 has 24 divisors (see below), whose sum is σ = 201298500. Its totient is φ = 30279744.

The previous prime is 91873097. The next prime is 91873099. The reversal of 91873098 is 89037819.

It is an interprime number because it is at equal distance from previous prime (91873097) and next prime (91873099).

It can be written as a sum of positive squares in 2 ways, for example, as 90497169 + 1375929 = 9513^2 + 1173^2 .

It is a super-2 number, since 2×91873098² = 16881332272235208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91873097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27073 + ... + 30276.

Almost surely, 2^91873098 is an apocalyptic number.

91873098 is an abundant number, since it is smaller than the sum of its proper divisors (109425402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91873098 is a wasteful number, since it uses less digits than its factorization.

91873098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57446 (or 57443 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 91873098 is about 9585.0455397979. The cubic root of 91873098 is about 451.2280824626.

The spelling of 91873098 in words is "ninety-one million, eight hundred seventy-three thousand, ninety-eight".