91940386 has 8 divisors (see below), whose sum is σ = 146023020. Its totient is φ = 43266048.

The previous prime is 91940377. The next prime is 91940393. The reversal of 91940386 is 68304919.

It can be written as a sum of positive squares in 2 ways, for example, as 78872161 + 13068225 = 8881^2 + 3615^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352031 + ... + 1352098.

Almost surely, 2^91940386 is an apocalyptic number.

91940386 is a deficient number, since it is larger than the sum of its proper divisors (54082634).

91940386 is a wasteful number, since it uses less digits than its factorization.

91940386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704148.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 91940386 is about 9588.5549484789. The cubic root of 91940386 is about 451.3382156297.

The spelling of 91940386 in words is "ninety-one million, nine hundred forty thousand, three hundred eighty-six".