2621254439 has 2 divisors, whose sum is σ = 2621254440. Its totient is φ = 2621254438.

The previous prime is 2621254403. The next prime is 2621254453. The reversal of 2621254439 is 9344521262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2621254439 - 2¹² = 2621250343 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2621254469) 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 as a sum of consecutive naturals, namely, 1310627219 + 1310627220.

It is an arithmetic number, because the mean of its divisors is an integer number (1310627220).

Almost surely, 2^2621254439 is an apocalyptic number.

2621254439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621254439 is an equidigital number, since it uses as much as digits as its factorization.

2621254439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The square root of 2621254439 is about 51198.1878487901. The cubic root of 2621254439 is about 1378.8056667499.

The spelling of 2621254439 in words is "two billion, six hundred twenty-one million, two hundred fifty-four thousand, four hundred thirty-nine".