40007007 has 16 divisors (see below), whose sum is σ = 59727360. Its totient is φ = 26465400.

The previous prime is 40007003. The next prime is 40007017. The reversal of 40007007 is 70070004.

It is not a de Polignac number, because 40007007 - 2² = 40007003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40007003) 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, 2119 + ... + 9192.

It is an arithmetic number, because the mean of its divisors is an integer number (3732960).

Almost surely, 2^40007007 is an apocalyptic number.

40007007 is a deficient number, since it is larger than the sum of its proper divisors (19720353).

40007007 is a wasteful number, since it uses less digits than its factorization.

40007007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11451 (or 11445 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 40007007 is about 6325.1092480684. The cubic root of 40007007 is about 342.0151578385.

The spelling of 40007007 in words is "forty million, seven thousand, seven".