4009969139 has 18 divisors (see below), whose sum is σ = 4461655068. Its totient is φ = 3574209600.

The previous prime is 4009969111. The next prime is 4009969141. The reversal of 4009969139 is 9319699004.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-4009969139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4009969199) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12811247 + ... + 12811559.

It is an arithmetic number, because the mean of its divisors is an integer number (247869726).

Almost surely, 2^4009969139 is an apocalyptic number.

4009969139 is a deficient number, since it is larger than the sum of its proper divisors (451685929).

4009969139 is an frugal number, since it uses more digits than its factorization.

4009969139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 50.

The square root of 4009969139 is about 63324.3171222556. The cubic root of 4009969139 is about 1588.7187097256.

The spelling of 4009969139 in words is "four billion, nine million, nine hundred sixty-nine thousand, one hundred thirty-nine".