40513717 has 4 divisors (see below), whose sum is σ = 40532256. Its totient is φ = 40495180.

The previous prime is 40513709. The next prime is 40513723. The reversal of 40513717 is 71731504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40513717 - 2³ = 40513709 is a prime.

It is a super-2 number, since 2×40513717² = 3282722530312178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40513217) 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, 5473 + ... + 10534.

It is an arithmetic number, because the mean of its divisors is an integer number (10133064).

Almost surely, 2^40513717 is an apocalyptic number.

It is an amenable number.

40513717 is a deficient number, since it is larger than the sum of its proper divisors (18539).

40513717 is a wasteful number, since it uses less digits than its factorization.

40513717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18538.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 40513717 is about 6365.0386487436. The cubic root of 40513717 is about 343.4530388719.

The spelling of 40513717 in words is "forty million, five hundred thirteen thousand, seven hundred seventeen".