91948669 has 4 divisors (see below), whose sum is σ = 91985344. Its totient is φ = 91911996.

The previous prime is 91948667. The next prime is 91948673. The reversal of 91948669 is 96684919.

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 a cyclic number.

It is not a de Polignac number, because 91948669 - 2¹ = 91948667 is a prime.

It is a super-2 number, since 2×91948669² = 16909115461743122, 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 (91948667) 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, 14277 + ... + 19690.

It is an arithmetic number, because the mean of its divisors is an integer number (22996336).

Almost surely, 2^91948669 is an apocalyptic number.

It is an amenable number.

91948669 is a deficient number, since it is larger than the sum of its proper divisors (36675).

91948669 is a wasteful number, since it uses less digits than its factorization.

91948669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36674.

The product of its digits is 839808, while the sum is 52.

The square root of 91948669 is about 9588.9868599347. The cubic root of 91948669 is about 451.3517690576.

The spelling of 91948669 in words is "ninety-one million, nine hundred forty-eight thousand, six hundred sixty-nine".