40404040007 has 2 divisors, whose sum is σ = 40404040008. Its totient is φ = 40404040006.

The previous prime is 40404040003. The next prime is 40404040009. The reversal of 40404040007 is 70004040404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40404040007 - 2² = 40404040003 is a prime.

Together with 40404040009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40404040003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20202020003 + 20202020004.

It is an arithmetic number, because the mean of its divisors is an integer number (20202020004).

Almost surely, 2^40404040007 is an apocalyptic number.

40404040007 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404040007 is an equidigital number, since it uses as much as digits as its factorization.

40404040007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 23.

The spelling of 40404040007 in words is "forty billion, four hundred four million, forty thousand, seven".