91925669 has 4 divisors (see below), whose sum is σ = 100282560. Its totient is φ = 83568780.

The previous prime is 91925663. The next prime is 91925671. The reversal of 91925669 is 96652919.

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 91925669 - 2⁸ = 91925413 is a prime.

It is a super-2 number, since 2×91925669² = 16900657242195122, 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 (91925663) 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, 4178429 + ... + 4178450.

It is an arithmetic number, because the mean of its divisors is an integer number (25070640).

Almost surely, 2^91925669 is an apocalyptic number.

It is an amenable number.

91925669 is a deficient number, since it is larger than the sum of its proper divisors (8356891).

91925669 is a wasteful number, since it uses less digits than its factorization.

91925669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8356890.

The product of its digits is 262440, while the sum is 47.

The square root of 91925669 is about 9587.7874924301. The cubic root of 91925669 is about 451.3141322743.

The spelling of 91925669 in words is "ninety-one million, nine hundred twenty-five thousand, six hundred sixty-nine".