40690907 has 2 divisors, whose sum is σ = 40690908. Its totient is φ = 40690906.

The previous prime is 40690891. The next prime is 40690919. The reversal of 40690907 is 70909604.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40690907 - 2⁴ = 40690891 is a prime.

It is not a weakly prime, because it can be changed into another prime (40690967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20345453 + 20345454.

It is an arithmetic number, because the mean of its divisors is an integer number (20345454).

Almost surely, 2^40690907 is an apocalyptic number.

40690907 is a deficient number, since it is larger than the sum of its proper divisors (1).

40690907 is an equidigital number, since it uses as much as digits as its factorization.

40690907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 40690907 is about 6378.9424672119. The cubic root of 40690907 is about 343.9530171773.

The spelling of 40690907 in words is "forty million, six hundred ninety thousand, nine hundred seven".