2449391839 has 4 divisors (see below), whose sum is σ = 2464059024. Its totient is φ = 2434724656.

The previous prime is 2449391827. The next prime is 2449391869. The reversal of 2449391839 is 9381939442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9381939442 = 2 ⋅4690969721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2449391839 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 (2449391869) 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 3 ways as a sum of consecutive naturals, for example, 7333342 + ... + 7333675.

It is an arithmetic number, because the mean of its divisors is an integer number (616014756).

Almost surely, 2^2449391839 is an apocalyptic number.

2449391839 is a deficient number, since it is larger than the sum of its proper divisors (14667185).

2449391839 is a wasteful number, since it uses less digits than its factorization.

2449391839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14667184.

The product of its digits is 1679616, while the sum is 52.

The square root of 2449391839 is about 49491.3309479549. The cubic root of 2449391839 is about 1347.9881948486.

The spelling of 2449391839 in words is "two billion, four hundred forty-nine million, three hundred ninety-one thousand, eight hundred thirty-nine".