91614289 has 8 divisors (see below), whose sum is σ = 99325800. Its totient is φ = 83997696.

The previous prime is 91614283. The next prime is 91614293. The reversal of 91614289 is 98241619.

It can be written as a sum of positive squares in 4 ways, for example, as 1459264 + 90155025 = 1208^2 + 9495^2 .

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-91614289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91614283) 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, 21712 + ... + 25585.

It is an arithmetic number, because the mean of its divisors is an integer number (12415725).

Almost surely, 2^91614289 is an apocalyptic number.

It is an amenable number.

91614289 is a deficient number, since it is larger than the sum of its proper divisors (7711511).

91614289 is a wasteful number, since it uses less digits than its factorization.

91614289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47459.

The product of its digits is 31104, while the sum is 40.

The square root of 91614289 is about 9571.5353522828. The cubic root of 91614289 is about 450.8039767395.

The spelling of 91614289 in words is "ninety-one million, six hundred fourteen thousand, two hundred eighty-nine".