40669957 has 8 divisors (see below), whose sum is σ = 42751296. Its totient is φ = 38614752.

The previous prime is 40669907. The next prime is 40669961. The reversal of 40669957 is 75996604.

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 40669957 - 2¹⁵ = 40637189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40669907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3303 + ... + 9604.

It is an arithmetic number, because the mean of its divisors is an integer number (5343912).

Almost surely, 2^40669957 is an apocalyptic number.

It is an amenable number.

40669957 is a deficient number, since it is larger than the sum of its proper divisors (2081339).

40669957 is a wasteful number, since it uses less digits than its factorization.

40669957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13067.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 40669957 is about 6377.3001340693. The cubic root of 40669957 is about 343.8939781663.

The spelling of 40669957 in words is "forty million, six hundred sixty-nine thousand, nine hundred fifty-seven".