91799378 has 8 divisors (see below), whose sum is σ = 150217200. Its totient is φ = 41726980.

The previous prime is 91799377. The next prime is 91799387. The reversal of 91799378 is 87399719.

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

It is not an unprimeable number, because it can be changed into a prime (91799377) 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, 2086328 + ... + 2086371.

It is an arithmetic number, because the mean of its divisors is an integer number (18777150).

Almost surely, 2^91799378 is an apocalyptic number.

91799378 is a deficient number, since it is larger than the sum of its proper divisors (58417822).

91799378 is a wasteful number, since it uses less digits than its factorization.

91799378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172712.

The product of its digits is 857304, while the sum is 53.

The square root of 91799378 is about 9581.1991942554. The cubic root of 91799378 is about 451.1073600160.

The spelling of 91799378 in words is "ninety-one million, seven hundred ninety-nine thousand, three hundred seventy-eight".