91941667 has 2 divisors, whose sum is σ = 91941668. Its totient is φ = 91941666.

The previous prime is 91941653. The next prime is 91941671. The reversal of 91941667 is 76614919.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91941667 is a prime.

It is not a weakly prime, because it can be changed into another prime (91941677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45970833 + 45970834.

It is an arithmetic number, because the mean of its divisors is an integer number (45970834).

Almost surely, 2^91941667 is an apocalyptic number.

91941667 is a deficient number, since it is larger than the sum of its proper divisors (1).

91941667 is an equidigital number, since it uses as much as digits as its factorization.

91941667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 43.

The square root of 91941667 is about 9588.6217466328. The cubic root of 91941667 is about 451.3403117763.

The spelling of 91941667 in words is "ninety-one million, nine hundred forty-one thousand, six hundred sixty-seven".