91443748 has 24 divisors (see below), whose sum is σ = 184845024. Its totient is φ = 39120000.

The previous prime is 91443739. The next prime is 91443749. The reversal of 91443748 is 84734419.

It is a self number, because there is not a number n which added to its sum of digits gives 91443748.

It is not an unprimeable number, because it can be changed into a prime (91443749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60378 + ... + 61873.

It is an arithmetic number, because the mean of its divisors is an integer number (7701876).

Almost surely, 2^91443748 is an apocalyptic number.

It is an amenable number.

91443748 is an abundant number, since it is smaller than the sum of its proper divisors (93401276).

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

91443748 is a wasteful number, since it uses less digits than its factorization.

91443748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122283 (or 122281 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 91443748 is about 9562.6224436605. The cubic root of 91443748 is about 450.5240774796.

The spelling of 91443748 in words is "ninety-one million, four hundred forty-three thousand, seven hundred forty-eight".