10139009749 has 6 divisors (see below), whose sum is σ = 11144531510. Its totient is φ = 9217281480.

The previous prime is 10139009737. The next prime is 10139009759. The reversal of 10139009749 is 94790093101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9359595025 + 779414724 = 96745^2 + 27918^2 .

It is not a de Polignac number, because 10139009749 - 2²³ = 10130621141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10139009719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41896614 + ... + 41896855.

Almost surely, 2^10139009749 is an apocalyptic number.

It is an amenable number.

10139009749 is a deficient number, since it is larger than the sum of its proper divisors (1005521761).

10139009749 is an equidigital number, since it uses as much as digits as its factorization.

10139009749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83793491 (or 83793480 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 43.

The spelling of 10139009749 in words is "ten billion, one hundred thirty-nine million, nine thousand, seven hundred forty-nine".