91472026 has 4 divisors (see below), whose sum is σ = 137208042. Its totient is φ = 45736012.

The previous prime is 91472021. The next prime is 91472027. The reversal of 91472026 is 62027419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62027419 = 19 ⋅3264601.

It can be written as a sum of positive squares in only one way, i.e., 63920025 + 27552001 = 7995^2 + 5249^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (91472021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22868005 + ... + 22868008.

Almost surely, 2^91472026 is an apocalyptic number.

91472026 is a deficient number, since it is larger than the sum of its proper divisors (45736016).

91472026 is a wasteful number, since it uses less digits than its factorization.

91472026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45736015.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 91472026 is about 9564.1008986731. The cubic root of 91472026 is about 450.5705126091.

The spelling of 91472026 in words is "ninety-one million, four hundred seventy-two thousand, twenty-six".