91409361 has 8 divisors (see below), whose sum is σ = 128293920. Its totient is φ = 57732192.

The previous prime is 91409347. The next prime is 91409369. The reversal of 91409361 is 16390419.

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

It is not a de Polignac number, because 91409361 - 2¹³ = 91401169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91409369) 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, 801780 + ... + 801893.

It is an arithmetic number, because the mean of its divisors is an integer number (16036740).

Almost surely, 2^91409361 is an apocalyptic number.

It is an amenable number.

91409361 is a deficient number, since it is larger than the sum of its proper divisors (36884559).

91409361 is a wasteful number, since it uses less digits than its factorization.

91409361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603695.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 91409361 is about 9560.8242845479. The cubic root of 91409361 is about 450.4675978983.

The spelling of 91409361 in words is "ninety-one million, four hundred nine thousand, three hundred sixty-one".