91214659 has 2 divisors, whose sum is σ = 91214660. Its totient is φ = 91214658.

The previous prime is 91214597. The next prime is 91214677. The reversal of 91214659 is 95641219.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91214659 is a prime.

It is a super-2 number, since 2×91214659² = 16640228032972562, which contains 22 as substring.

It is a Chen prime.

It is equal to p_5283397 and since 91214659 and 5283397 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (91214689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45607329 + 45607330.

It is an arithmetic number, because the mean of its divisors is an integer number (45607330).

Almost surely, 2^91214659 is an apocalyptic number.

91214659 is a deficient number, since it is larger than the sum of its proper divisors (1).

91214659 is an equidigital number, since it uses as much as digits as its factorization.

91214659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 91214659 is about 9550.6365756425. The cubic root of 91214659 is about 450.1475384536.

The spelling of 91214659 in words is "ninety-one million, two hundred fourteen thousand, six hundred fifty-nine".