40168907 has 8 divisors (see below), whose sum is σ = 42863760. Its totient is φ = 37532160.

The previous prime is 40168903. The next prime is 40168913. The reversal of 40168907 is 70986104.

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 40168907 - 2² = 40168903 is a prime.

It is a super-2 number, since 2×40168907² = 3227082179149298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40168903) 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, 13094 + ... + 15867.

It is an arithmetic number, because the mean of its divisors is an integer number (5357970).

Almost surely, 2^40168907 is an apocalyptic number.

40168907 is a deficient number, since it is larger than the sum of its proper divisors (2694853).

40168907 is a wasteful number, since it uses less digits than its factorization.

40168907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29053.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 40168907 is about 6337.8945242091. The cubic root of 40168907 is about 342.4758915312.

The spelling of 40168907 in words is "forty million, one hundred sixty-eight thousand, nine hundred seven".