40139394104 has 16 divisors (see below), whose sum is σ = 78533597520. Its totient is φ = 19197101440.

The previous prime is 40139394079. The next prime is 40139394107. The reversal of 40139394104 is 40149393104.

It is a happy number.

It is a super-2 number, since 2×40139394104² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40139394107) by changing a digit.

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, 109074257 + ... + 109074624.

It is an arithmetic number, because the mean of its divisors is an integer number (4908349845).

Almost surely, 2^40139394104 is an apocalyptic number.

It is an amenable number.

40139394104 is a deficient number, since it is larger than the sum of its proper divisors (38394203416).

40139394104 is a wasteful number, since it uses less digits than its factorization.

40139394104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218148910 (or 218148906 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 40139394104 in words is "forty billion, one hundred thirty-nine million, three hundred ninety-four thousand, one hundred four".