91408867 has 8 divisors (see below), whose sum is σ = 104967360. Its totient is φ = 78725160.

The previous prime is 91408861. The next prime is 91408871. The reversal of 91408867 is 76880419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91408867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91408861) 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, 218473 + ... + 218890.

It is an arithmetic number, because the mean of its divisors is an integer number (13120920).

Almost surely, 2^91408867 is an apocalyptic number.

91408867 is a deficient number, since it is larger than the sum of its proper divisors (13558493).

91408867 is a wasteful number, since it uses less digits than its factorization.

91408867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437393.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 91408867 is about 9560.7984499204. The cubic root of 91408867 is about 450.4667864155.

The spelling of 91408867 in words is "ninety-one million, four hundred eight thousand, eight hundred sixty-seven".