40001000007 has 4 divisors (see below), whose sum is σ = 53334666680. Its totient is φ = 26667333336.

The previous prime is 40001000003. The next prime is 40001000021. The reversal of 40001000007 is 70000010004.

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

It is not a de Polignac number, because 40001000007 - 2² = 40001000003 is a prime.

It is the 200003-rd Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40000999956 and 40001000001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40001000003) by changing a digit.

It is a nontrivial repunit in base 200002.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6666833332 + ... + 6666833337.

It is an arithmetic number, because the mean of its divisors is an integer number (13333666670).

Almost surely, 2^40001000007 is an apocalyptic number.

40001000007 is a deficient number, since it is larger than the sum of its proper divisors (13333666673).

40001000007 is a wasteful number, since it uses less digits than its factorization.

40001000007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13333666672.

The product of its (nonzero) digits is 28, while the sum is 12.

The spelling of 40001000007 in words is "forty billion, one million, seven", and thus it is an aban number and an uban number.