40892591 has 4 divisors (see below), whose sum is σ = 41014272. Its totient is φ = 40770912.

The previous prime is 40892587. The next prime is 40892611. The reversal of 40892591 is 19529804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40892591 - 2² = 40892587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40892561) 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, 60335 + ... + 61008.

It is an arithmetic number, because the mean of its divisors is an integer number (10253568).

Almost surely, 2^40892591 is an apocalyptic number.

40892591 is a deficient number, since it is larger than the sum of its proper divisors (121681).

40892591 is a wasteful number, since it uses less digits than its factorization.

40892591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121680.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 40892591 is about 6394.7315033549. The cubic root of 40892591 is about 344.5203472415.

The spelling of 40892591 in words is "forty million, eight hundred ninety-two thousand, five hundred ninety-one".