40749317 has 4 divisors (see below), whose sum is σ = 46570656. Its totient is φ = 34927980.

The previous prime is 40749299. The next prime is 40749341. The reversal of 40749317 is 71394704.

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 40749317 - 2⁸ = 40749061 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 (40749817) 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, 2910659 + ... + 2910672.

It is an arithmetic number, because the mean of its divisors is an integer number (11642664).

Almost surely, 2^40749317 is an apocalyptic number.

It is an amenable number.

40749317 is a deficient number, since it is larger than the sum of its proper divisors (5821339).

40749317 is an equidigital number, since it uses as much as digits as its factorization.

40749317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821338.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 40749317 is about 6383.5191704890. The cubic root of 40749317 is about 344.1175149481.

The spelling of 40749317 in words is "forty million, seven hundred forty-nine thousand, three hundred seventeen".