40072317 has 8 divisors (see below), whose sum is σ = 54073824. Its totient is φ = 26392848.

The previous prime is 40072309. The next prime is 40072327. The reversal of 40072317 is 71327004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40072317 - 2³ = 40072309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40072327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80218 + ... + 80715.

It is an arithmetic number, because the mean of its divisors is an integer number (6759228).

Almost surely, 2^40072317 is an apocalyptic number.

It is an amenable number.

40072317 is a deficient number, since it is larger than the sum of its proper divisors (14001507).

40072317 is a wasteful number, since it uses less digits than its factorization.

40072317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161019.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 40072317 is about 6330.2698994593. The cubic root of 40072317 is about 342.2011658061.

The spelling of 40072317 in words is "forty million, seventy-two thousand, three hundred seventeen".