91478892 has 24 divisors (see below), whose sum is σ = 220337152. Its totient is φ = 29509200.

The previous prime is 91478879. The next prime is 91478897. The reversal of 91478892 is 29887419.

It is not an unprimeable number, because it can be changed into a prime (91478897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122584 + ... + 123327.

Almost surely, 2^91478892 is an apocalyptic number.

It is an amenable number.

91478892 is an abundant number, since it is smaller than the sum of its proper divisors (128858260).

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

91478892 is a wasteful number, since it uses less digits than its factorization.

91478892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245949 (or 245947 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 91478892 is about 9564.4598383808. The cubic root of 91478892 is about 450.5817857815.

The spelling of 91478892 in words is "ninety-one million, four hundred seventy-eight thousand, eight hundred ninety-two".