40964591 has 4 divisors (see below), whose sum is σ = 41080992. Its totient is φ = 40848192.

The previous prime is 40964569. The next prime is 40964641. The reversal of 40964591 is 19546904.

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 40964591 - 2⁶ = 40964527 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 (40964191) 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, 57671 + ... + 58376.

It is an arithmetic number, because the mean of its divisors is an integer number (10270248).

Almost surely, 2^40964591 is an apocalyptic number.

40964591 is a deficient number, since it is larger than the sum of its proper divisors (116401).

40964591 is a wasteful number, since it uses less digits than its factorization.

40964591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116400.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 40964591 is about 6400.3586618251. The cubic root of 40964591 is about 344.7224288428.

The spelling of 40964591 in words is "forty million, nine hundred sixty-four thousand, five hundred ninety-one".