91141592 has 16 divisors (see below), whose sum is σ = 172584000. Its totient is φ = 45119200.

The previous prime is 91141591. The next prime is 91141597. The reversal of 91141592 is 29514119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91141591) 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, 55592 + ... + 57207.

It is an arithmetic number, because the mean of its divisors is an integer number (10786500).

Almost surely, 2^91141592 is an apocalyptic number.

It is an amenable number.

91141592 is a deficient number, since it is larger than the sum of its proper divisors (81442408).

91141592 is a wasteful number, since it uses less digits than its factorization.

91141592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112906 (or 112902 counting only the distinct ones).

The product of its digits is 3240, while the sum is 32.

The square root of 91141592 is about 9546.8105668857. The cubic root of 91141592 is about 450.0273102767.

The spelling of 91141592 in words is "ninety-one million, one hundred forty-one thousand, five hundred ninety-two".