40297907 has 16 divisors (see below), whose sum is σ = 45276000. Its totient is φ = 35610624.

The previous prime is 40297903. The next prime is 40297919. The reversal of 40297907 is 70979204.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40297907 - 2² = 40297903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40297903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52019 + ... + 52787.

It is an arithmetic number, because the mean of its divisors is an integer number (2829750).

Almost surely, 2^40297907 is an apocalyptic number.

40297907 is a deficient number, since it is larger than the sum of its proper divisors (4978093).

40297907 is a wasteful number, since it uses less digits than its factorization.

40297907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 40297907 is about 6348.0632479521. The cubic root of 40297907 is about 342.8421132714.

The spelling of 40297907 in words is "forty million, two hundred ninety-seven thousand, nine hundred seven".