91179480 has 256 divisors, whose sum is σ = 342144000. Its totient is φ = 18966528.

The previous prime is 91179469. The next prime is 91179493. The reversal of 91179480 is 8497119.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 462742 + ... + 462938.

It is an arithmetic number, because the mean of its divisors is an integer number (1336500).

Almost surely, 2^91179480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91179480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171072000).

91179480 is an abundant number, since it is smaller than the sum of its proper divisors (250964520).

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

91179480 is a wasteful number, since it uses less digits than its factorization.

91179480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 91179480 is about 9548.7946883363. The cubic root of 91179480 is about 450.0896611464.

The spelling of 91179480 in words is "ninety-one million, one hundred seventy-nine thousand, four hundred eighty".