91124998 has 32 divisors (see below), whose sum is σ = 149412384. Its totient is φ = 41513472.

The previous prime is 91124983. The next prime is 91125017. The reversal of 91124998 is 89942119.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229336 + ... + 229732.

It is an arithmetic number, because the mean of its divisors is an integer number (4669137).

Almost surely, 2^91124998 is an apocalyptic number.

91124998 is a deficient number, since it is larger than the sum of its proper divisors (58287386).

91124998 is a wasteful number, since it uses less digits than its factorization.

91124998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

The product of its digits is 46656, while the sum is 43.

The square root of 91124998 is about 9545.9414412618. The cubic root of 91124998 is about 449.9999967078. Note that the first 5 decimals are identical.

The spelling of 91124998 in words is "ninety-one million, one hundred twenty-four thousand, nine hundred ninety-eight".