40918659 has 4 divisors (see below), whose sum is σ = 54558216. Its totient is φ = 27279104.

The previous prime is 40918639. The next prime is 40918663. The reversal of 40918659 is 95681904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40918659 - 2⁵ = 40918627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40918659.

It is not an unprimeable number, because it can be changed into a prime (40918639) 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, 6819774 + ... + 6819779.

It is an arithmetic number, because the mean of its divisors is an integer number (13639554).

Almost surely, 2^40918659 is an apocalyptic number.

40918659 is a deficient number, since it is larger than the sum of its proper divisors (13639557).

40918659 is a wasteful number, since it uses less digits than its factorization.

40918659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13639556.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 40918659 is about 6396.7694190114. The cubic root of 40918659 is about 344.5935393812.

The spelling of 40918659 in words is "forty million, nine hundred eighteen thousand, six hundred fifty-nine".