91479337 has 2 divisors, whose sum is σ = 91479338. Its totient is φ = 91479336.

The previous prime is 91479331. The next prime is 91479341. The reversal of 91479337 is 73397419.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91183401 + 295936 = 9549^2 + 544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91479337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91479293 and 91479302.

It is not a weakly prime, because it can be changed into another prime (91479331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45739668 + 45739669.

It is an arithmetic number, because the mean of its divisors is an integer number (45739669).

Almost surely, 2^91479337 is an apocalyptic number.

It is an amenable number.

91479337 is a deficient number, since it is larger than the sum of its proper divisors (1).

91479337 is an equidigital number, since it uses as much as digits as its factorization.

91479337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 43.

The square root of 91479337 is about 9564.4831015586. The cubic root of 91479337 is about 450.5825164002.

The spelling of 91479337 in words is "ninety-one million, four hundred seventy-nine thousand, three hundred thirty-seven".