40004404007 has 4 divisors (see below), whose sum is σ = 40025902056. Its totient is φ = 39982905960.

The previous prime is 40004404001. The next prime is 40004404021. The reversal of 40004404007 is 70040440004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40004404007 - 2¹⁶ = 40004338471 is a prime.

It is a super-3 number, since 3×40004404007³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40004404001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10746233 + ... + 10749954.

It is an arithmetic number, because the mean of its divisors is an integer number (10006475514).

Almost surely, 2^40004404007 is an apocalyptic number.

40004404007 is a deficient number, since it is larger than the sum of its proper divisors (21498049).

40004404007 is a wasteful number, since it uses less digits than its factorization.

40004404007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21498048.

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

The spelling of 40004404007 in words is "forty billion, four million, four hundred four thousand, seven".