40007507 has 2 divisors, whose sum is σ = 40007508. Its totient is φ = 40007506.

The previous prime is 40007497. The next prime is 40007519. The reversal of 40007507 is 70570004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40007507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40007567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003753 + 20003754.

It is an arithmetic number, because the mean of its divisors is an integer number (20003754).

Almost surely, 2^40007507 is an apocalyptic number.

40007507 is a deficient number, since it is larger than the sum of its proper divisors (1).

40007507 is an equidigital number, since it uses as much as digits as its factorization.

40007507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 40007507 is about 6325.1487729539. The cubic root of 40007507 is about 342.0165826461.

The spelling of 40007507 in words is "forty million, seven thousand, five hundred seven".