3726994139 has 18 divisors (see below), whose sum is σ = 4135678596. Its totient is φ = 3330930720.

The previous prime is 3726994111. The next prime is 3726994151. The reversal of 3726994139 is 9314996273.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-3726994139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3726994199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15995567 + ... + 15995799.

It is an arithmetic number, because the mean of its divisors is an integer number (229759922).

Almost surely, 2^3726994139 is an apocalyptic number.

3726994139 is a deficient number, since it is larger than the sum of its proper divisors (408684457).

3726994139 is an frugal number, since it uses more digits than its factorization.

3726994139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 323 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 53.

The square root of 3726994139 is about 61049.1125160718. The cubic root of 3726994139 is about 1550.4326421832.

The spelling of 3726994139 in words is "three billion, seven hundred twenty-six million, nine hundred ninety-four thousand, one hundred thirty-nine".