2119939439 has 4 divisors (see below), whose sum is σ = 2123364840. Its totient is φ = 2116514040.

The previous prime is 2119939397. The next prime is 2119939441. The reversal of 2119939439 is 9349399112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2119939439 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 (2119939139) 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, 1711772 + ... + 1713009.

It is an arithmetic number, because the mean of its divisors is an integer number (530841210).

Almost surely, 2^2119939439 is an apocalyptic number.

2119939439 is a deficient number, since it is larger than the sum of its proper divisors (3425401).

2119939439 is an equidigital number, since it uses as much as digits as its factorization.

2119939439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425400.

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

The square root of 2119939439 is about 46042.8000777537. The cubic root of 2119939439 is about 1284.6194251152.

The spelling of 2119939439 in words is "two billion, one hundred nineteen million, nine hundred thirty-nine thousand, four hundred thirty-nine".