40140907 has 2 divisors, whose sum is σ = 40140908. Its totient is φ = 40140906.

The previous prime is 40140899. The next prime is 40140931. The reversal of 40140907 is 70904104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40140907 - 2³ = 40140899 is a prime.

It is a super-2 number, since 2×40140907² = 3222584829565298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40140937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20070453 + 20070454.

It is an arithmetic number, because the mean of its divisors is an integer number (20070454).

Almost surely, 2^40140907 is an apocalyptic number.

40140907 is a deficient number, since it is larger than the sum of its proper divisors (1).

40140907 is an equidigital number, since it uses as much as digits as its factorization.

40140907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 40140907 is about 6335.6852036698. The cubic root of 40140907 is about 342.3962980128.

The spelling of 40140907 in words is "forty million, one hundred forty thousand, nine hundred seven".