40917623 has 4 divisors (see below), whose sum is σ = 43324560. Its totient is φ = 38510688.

The previous prime is 40917581. The next prime is 40917647. The reversal of 40917623 is 32671904.

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 40917623 - 2⁶ = 40917559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40917623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40917673) 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, 1203443 + ... + 1203476.

It is an arithmetic number, because the mean of its divisors is an integer number (10831140).

Almost surely, 2^40917623 is an apocalyptic number.

40917623 is a deficient number, since it is larger than the sum of its proper divisors (2406937).

40917623 is a wasteful number, since it uses less digits than its factorization.

40917623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406936.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 40917623 is about 6396.6884401227. The cubic root of 40917623 is about 344.5906311569.

The spelling of 40917623 in words is "forty million, nine hundred seventeen thousand, six hundred twenty-three".