91392429 has 4 divisors (see below), whose sum is σ = 121856576. Its totient is φ = 60928284.

The previous prime is 91392421. The next prime is 91392443. The reversal of 91392429 is 92429319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 91392429 - 2³ = 91392421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91392421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15232069 + ... + 15232074.

It is an arithmetic number, because the mean of its divisors is an integer number (30464144).

Almost surely, 2^91392429 is an apocalyptic number.

It is an amenable number.

91392429 is a deficient number, since it is larger than the sum of its proper divisors (30464147).

91392429 is a wasteful number, since it uses less digits than its factorization.

91392429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30464146.

The product of its digits is 34992, while the sum is 39.

The square root of 91392429 is about 9559.9387550339. The cubic root of 91392429 is about 450.4397824089.

The spelling of 91392429 in words is "ninety-one million, three hundred ninety-two thousand, four hundred twenty-nine".