91792394 has 4 divisors (see below), whose sum is σ = 137688594. Its totient is φ = 45896196.

The previous prime is 91792387. The next prime is 91792417. The reversal of 91792394 is 49329719.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60264169 + 31528225 = 7763^2 + 5615^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22948097 + ... + 22948100.

Almost surely, 2^91792394 is an apocalyptic number.

91792394 is a deficient number, since it is larger than the sum of its proper divisors (45896200).

91792394 is a wasteful number, since it uses less digits than its factorization.

91792394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45896199.

The product of its digits is 122472, while the sum is 44.

The square root of 91792394 is about 9580.8347235510. The cubic root of 91792394 is about 451.0959198016.

The spelling of 91792394 in words is "ninety-one million, seven hundred ninety-two thousand, three hundred ninety-four".