91479960 has 192 divisors, whose sum is σ = 349483680. Its totient is φ = 20459520.

The previous prime is 91479923. The next prime is 91480069. The reversal of 91479960 is 6997419.

91479960 is a `hidden beast` number, since 91 + 479 + 96 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 50592 + ... + 52368.

Almost surely, 2^91479960 is an apocalyptic number.

91479960 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91479960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174741840).

91479960 is an abundant number, since it is smaller than the sum of its proper divisors (258003720).

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

91479960 is a wasteful number, since it uses less digits than its factorization.

91479960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 91479960 is about 9564.5156699124. The cubic root of 91479960 is about 450.5835392624.

The spelling of 91479960 in words is "ninety-one million, four hundred seventy-nine thousand, nine hundred sixty".