91669492 has 6 divisors (see below), whose sum is σ = 160421618. Its totient is φ = 45834744.

The previous prime is 91669483. The next prime is 91669499. The reversal of 91669492 is 29496619.

It can be written as a sum of positive squares in only one way, i.e., 59814756 + 31854736 = 7734^2 + 5644^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91669499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11458683 + ... + 11458690.

Almost surely, 2^91669492 is an apocalyptic number.

It is an amenable number.

91669492 is a deficient number, since it is larger than the sum of its proper divisors (68752126).

91669492 is a wasteful number, since it uses less digits than its factorization.

91669492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22917377 (or 22917375 counting only the distinct ones).

The product of its digits is 209952, while the sum is 46.

The square root of 91669492 is about 9574.4186246477. The cubic root of 91669492 is about 450.8945038668.

The spelling of 91669492 in words is "ninety-one million, six hundred sixty-nine thousand, four hundred ninety-two".