91983942 has 24 divisors (see below), whose sum is σ = 202031544. Its totient is φ = 30240864.

The previous prime is 91983937. The next prime is 91983943. The reversal of 91983942 is 24938919.

It is a super-2 number, since 2×91983942² = 16922091171718728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91983943) 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 11 ways as a sum of consecutive naturals, for example, 33688 + ... + 36315.

It is an arithmetic number, because the mean of its divisors is an integer number (8417981).

Almost surely, 2^91983942 is an apocalyptic number.

91983942 is an abundant number, since it is smaller than the sum of its proper divisors (110047602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91983942 is a wasteful number, since it uses less digits than its factorization.

91983942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70084 (or 70081 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 91983942 is about 9590.8259289803. The cubic root of 91983942 is about 451.4094769642.

The spelling of 91983942 in words is "ninety-one million, nine hundred eighty-three thousand, nine hundred forty-two".