91268479 has 2 divisors, whose sum is σ = 91268480. Its totient is φ = 91268478.

The previous prime is 91268473. The next prime is 91268579. The reversal of 91268479 is 97486219.

It is a weak prime.

It is an emirp because it is prime and its reverse (97486219) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91268479 - 2⁵ = 91268447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91268473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45634239 + 45634240.

It is an arithmetic number, because the mean of its divisors is an integer number (45634240).

Almost surely, 2^91268479 is an apocalyptic number.

91268479 is a deficient number, since it is larger than the sum of its proper divisors (1).

91268479 is an equidigital number, since it uses as much as digits as its factorization.

91268479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 91268479 is about 9553.4537733743. The cubic root of 91268479 is about 450.2360555750.

It can be divided in two parts, 912684 and 79, that multiplied together give a triangular number (72102036 = T₁₂₀₀₈).

The spelling of 91268479 in words is "ninety-one million, two hundred sixty-eight thousand, four hundred seventy-nine".