40289715 has 24 divisors (see below), whose sum is σ = 70212480. Its totient is φ = 21371904.

The previous prime is 40289701. The next prime is 40289719. The reversal of 40289715 is 51798204.

It is not a de Polignac number, because 40289715 - 2¹³ = 40281523 is a prime.

It is a super-2 number, since 2×40289715² = 3246522269562450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40289715.

It is not an unprimeable number, because it can be changed into a prime (40289719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6366 + ... + 11004.

It is an arithmetic number, because the mean of its divisors is an integer number (2925520).

Almost surely, 2^40289715 is an apocalyptic number.

40289715 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40289715 is a deficient number, since it is larger than the sum of its proper divisors (29922765).

40289715 is a wasteful number, since it uses less digits than its factorization.

40289715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843 (or 4840 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 40289715 is about 6347.4179789896. The cubic root of 40289715 is about 342.8188800306.

The spelling of 40289715 in words is "forty million, two hundred eighty-nine thousand, seven hundred fifteen".