91600869 has 4 divisors (see below), whose sum is σ = 122134496. Its totient is φ = 61067244.

The previous prime is 91600849. The next prime is 91600871. The reversal of 91600869 is 96800619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 91600869 - 2⁷ = 91600741 is a prime.

It is a super-2 number, since 2×91600869² = 16781438403110322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91600819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15266809 + ... + 15266814.

It is an arithmetic number, because the mean of its divisors is an integer number (30533624).

Almost surely, 2^91600869 is an apocalyptic number.

It is an amenable number.

91600869 is a deficient number, since it is larger than the sum of its proper divisors (30533627).

91600869 is a wasteful number, since it uses less digits than its factorization.

91600869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30533626.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 91600869 is about 9570.8342896531. The cubic root of 91600869 is about 450.7819638531.

The spelling of 91600869 in words is "ninety-one million, six hundred thousand, eight hundred sixty-nine".