2539490439 has 4 divisors (see below), whose sum is σ = 3385987256. Its totient is φ = 1692993624.

The previous prime is 2539490423. The next prime is 2539490461. The reversal of 2539490439 is 9340949352.

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

It is not a de Polignac number, because 2539490439 - 2⁴ = 2539490423 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 (2539490539) 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 3 ways as a sum of consecutive naturals, for example, 423248404 + ... + 423248409.

It is an arithmetic number, because the mean of its divisors is an integer number (846496814).

Almost surely, 2^2539490439 is an apocalyptic number.

2539490439 is a deficient number, since it is larger than the sum of its proper divisors (846496817).

2539490439 is an equidigital number, since it uses as much as digits as its factorization.

2539490439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846496816.

The product of its (nonzero) digits is 1049760, while the sum is 48.

The square root of 2539490439 is about 50393.3570919819. The cubic root of 2539490439 is about 1364.3177435543.

The spelling of 2539490439 in words is "two billion, five hundred thirty-nine million, four hundred ninety thousand, four hundred thirty-nine".