2739408639 has 8 divisors (see below), whose sum is σ = 3984594432. Its totient is φ = 1660247640.

The previous prime is 2739408631. The next prime is 2739408667. The reversal of 2739408639 is 9368049372.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2739408639 - 2³ = 2739408631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2739408591 and 2739408600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2739408631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41506159 + ... + 41506224.

It is an arithmetic number, because the mean of its divisors is an integer number (498074304).

Almost surely, 2^2739408639 is an apocalyptic number.

2739408639 is a deficient number, since it is larger than the sum of its proper divisors (1245185793).

2739408639 is a wasteful number, since it uses less digits than its factorization.

2739408639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83012397.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The square root of 2739408639 is about 52339.3603228010. The cubic root of 2739408639 is about 1399.2187203752.

The spelling of 2739408639 in words is "two billion, seven hundred thirty-nine million, four hundred eight thousand, six hundred thirty-nine".