91790434 has 8 divisors (see below), whose sum is σ = 137757888. Its totient is φ = 45871140.

The previous prime is 91790383. The next prime is 91790437. The reversal of 91790434 is 43409719.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 91790393 and 91790402.

It is not an unprimeable number, because it can be changed into a prime (91790437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6822 + ... + 15169.

It is an arithmetic number, because the mean of its divisors is an integer number (17219736).

Almost surely, 2^91790434 is an apocalyptic number.

91790434 is a deficient number, since it is larger than the sum of its proper divisors (45967454).

91790434 is a wasteful number, since it uses less digits than its factorization.

91790434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24080.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 91790434 is about 9580.7324354665. The cubic root of 91790434 is about 451.0927090988.

The spelling of 91790434 in words is "ninety-one million, seven hundred ninety thousand, four hundred thirty-four".