91496858 has 4 divisors (see below), whose sum is σ = 137245290. Its totient is φ = 45748428.

The previous prime is 91496851. The next prime is 91496887. The reversal of 91496858 is 85869419.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85869419 = 23 ⋅3733453.

It can be written as a sum of positive squares in only one way, i.e., 91145209 + 351649 = 9547^2 + 593^2 .

It is not an unprimeable number, because it can be changed into a prime (91496851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22874213 + ... + 22874216.

Almost surely, 2^91496858 is an apocalyptic number.

91496858 is a deficient number, since it is larger than the sum of its proper divisors (45748432).

91496858 is a wasteful number, since it uses less digits than its factorization.

91496858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45748431.

The product of its digits is 622080, while the sum is 50.

The square root of 91496858 is about 9565.3989984736. The cubic root of 91496858 is about 450.6112811922.

The spelling of 91496858 in words is "ninety-one million, four hundred ninety-six thousand, eight hundred fifty-eight".