91839048 has 32 divisors (see below), whose sum is σ = 262397760. Its totient is φ = 26239680.

The previous prime is 91839043. The next prime is 91839053. The reversal of 91839048 is 84093819.

It is an interprime number because it is at equal distance from previous prime (91839043) and next prime (91839053).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (91839043) 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 7 ways as a sum of consecutive naturals, for example, 273163 + ... + 273498.

It is an arithmetic number, because the mean of its divisors is an integer number (8199930).

Almost surely, 2^91839048 is an apocalyptic number.

It is an amenable number.

91839048 is an abundant number, since it is smaller than the sum of its proper divisors (170558712).

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

91839048 is a wasteful number, since it uses less digits than its factorization.

91839048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546677 (or 546673 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 91839048 is about 9583.2691707997. The cubic root of 91839048 is about 451.1723308695.

The spelling of 91839048 in words is "ninety-one million, eight hundred thirty-nine thousand, forty-eight".