40144317 has 8 divisors (see below), whose sum is σ = 53555040. Its totient is φ = 26748240.

The previous prime is 40144309. The next prime is 40144331. The reversal of 40144317 is 71344104.

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

It is not a de Polignac number, because 40144317 - 2³ = 40144309 is a prime.

It is a super-2 number, since 2×40144317² = 3223132374792978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40144337) 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, 8734 + ... + 12512.

It is an arithmetic number, because the mean of its divisors is an integer number (6694380).

Almost surely, 2^40144317 is an apocalyptic number.

It is an amenable number.

40144317 is a deficient number, since it is larger than the sum of its proper divisors (13410723).

40144317 is a wasteful number, since it uses less digits than its factorization.

40144317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7323.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 40144317 is about 6335.9543085474. The cubic root of 40144317 is about 342.4059933452.

The spelling of 40144317 in words is "forty million, one hundred forty-four thousand, three hundred seventeen".