91952691 has 4 divisors (see below), whose sum is σ = 122603592. Its totient is φ = 61301792.

The previous prime is 91952687. The next prime is 91952717. The reversal of 91952691 is 19625919.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19625919 = 3 ⋅6541973.

It is a cyclic number.

It is not a de Polignac number, because 91952691 - 2² = 91952687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91952611) 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, 15325446 + ... + 15325451.

It is an arithmetic number, because the mean of its divisors is an integer number (30650898).

Almost surely, 2^91952691 is an apocalyptic number.

91952691 is a deficient number, since it is larger than the sum of its proper divisors (30650901).

91952691 is a wasteful number, since it uses less digits than its factorization.

91952691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30650900.

The product of its digits is 43740, while the sum is 42.

The square root of 91952691 is about 9589.1965773990. The cubic root of 91952691 is about 451.3583499408.

The spelling of 91952691 in words is "ninety-one million, nine hundred fifty-two thousand, six hundred ninety-one".