91423862 has 4 divisors (see below), whose sum is σ = 137135796. Its totient is φ = 45711930.

The previous prime is 91423861. The next prime is 91423879. The reversal of 91423862 is 26832419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26832419 = 467 ⋅57457.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91423861) 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 as a sum of consecutive naturals, namely, 22855964 + ... + 22855967.

It is an arithmetic number, because the mean of its divisors is an integer number (34283949).

Almost surely, 2^91423862 is an apocalyptic number.

91423862 is a deficient number, since it is larger than the sum of its proper divisors (45711934).

91423862 is a wasteful number, since it uses less digits than its factorization.

91423862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45711933.

The product of its digits is 20736, while the sum is 35.

The square root of 91423862 is about 9561.5826095893. The cubic root of 91423862 is about 450.4914170680.

The spelling of 91423862 in words is "ninety-one million, four hundred twenty-three thousand, eight hundred sixty-two".