91074929 has 4 divisors (see below), whose sum is σ = 99354480. Its totient is φ = 82795380.

The previous prime is 91074911. The next prime is 91074941. The reversal of 91074929 is 92947019.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92947019 = 11 ⋅8449729.

It is a cyclic number.

It is not a de Polignac number, because 91074929 - 2¹⁶ = 91009393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91074959) 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, 4139759 + ... + 4139780.

It is an arithmetic number, because the mean of its divisors is an integer number (24838620).

Almost surely, 2^91074929 is an apocalyptic number.

It is an amenable number.

91074929 is a deficient number, since it is larger than the sum of its proper divisors (8279551).

91074929 is a wasteful number, since it uses less digits than its factorization.

91074929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279550.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 91074929 is about 9543.3185527886. The cubic root of 91074929 is about 449.9175635000.

The spelling of 91074929 in words is "ninety-one million, seventy-four thousand, nine hundred twenty-nine".