40668959 has 8 divisors (see below), whose sum is σ = 41646528. Its totient is φ = 39696160.

The previous prime is 40668941. The next prime is 40668961. The reversal of 40668959 is 95986604.

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

It is a cyclic number.

It is not a de Polignac number, because 40668959 - 2⁸ = 40668703 is a prime.

It is a super-2 number, since 2×40668959² = 3307928452287362, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40668059) 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, 20729 + ... + 22605.

It is an arithmetic number, because the mean of its divisors is an integer number (5205816).

Almost surely, 2^40668959 is an apocalyptic number.

40668959 is a deficient number, since it is larger than the sum of its proper divisors (977569).

40668959 is a wasteful number, since it uses less digits than its factorization.

40668959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 40668959 is about 6377.2218873111. The cubic root of 40668959 is about 343.8911652054.

The spelling of 40668959 in words is "forty million, six hundred sixty-eight thousand, nine hundred fifty-nine".