91672269 has 16 divisors (see below), whose sum is σ = 134844864. Its totient is φ = 55036800.

The previous prime is 91672261. The next prime is 91672271. The reversal of 91672269 is 96227619.

It is not a de Polignac number, because 91672269 - 2³ = 91672261 is a prime.

It is a super-2 number, since 2×91672269² = 16807609807216722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91672269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91672261) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27067 + ... + 30264.

It is an arithmetic number, because the mean of its divisors is an integer number (8427804).

Almost surely, 2^91672269 is an apocalyptic number.

It is an amenable number.

91672269 is a deficient number, since it is larger than the sum of its proper divisors (43172595).

91672269 is a wasteful number, since it uses less digits than its factorization.

91672269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57388.

The product of its digits is 81648, while the sum is 42.

The square root of 91672269 is about 9574.5636454096. The cubic root of 91672269 is about 450.8990568952.

The spelling of 91672269 in words is "ninety-one million, six hundred seventy-two thousand, two hundred sixty-nine".