9139839941 has 4 divisors (see below), whose sum is σ = 9140325792. Its totient is φ = 9139354092.

The previous prime is 9139839923. The next prime is 9139839953. The reversal of 9139839941 is 1499389319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1499389319 = 89 ⋅16847071.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9139839941 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 (9139839911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213521 + ... + 252726.

It is an arithmetic number, because the mean of its divisors is an integer number (2285081448).

Almost surely, 2^9139839941 is an apocalyptic number.

It is an amenable number.

9139839941 is a deficient number, since it is larger than the sum of its proper divisors (485851).

9139839941 is a wasteful number, since it uses less digits than its factorization.

9139839941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485850.

The product of its digits is 1889568, while the sum is 56.

The square root of 9139839941 is about 95602.5101187202. The cubic root of 9139839941 is about 2090.8017909921.

The spelling of 9139839941 in words is "nine billion, one hundred thirty-nine million, eight hundred thirty-nine thousand, nine hundred forty-one".