3439721287 has 2 divisors, whose sum is σ = 3439721288. Its totient is φ = 3439721286.

The previous prime is 3439721269. The next prime is 3439721303. The reversal of 3439721287 is 7821279343.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3439721287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3439721587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1719860643 + 1719860644.

It is an arithmetic number, because the mean of its divisors is an integer number (1719860644).

Almost surely, 2^3439721287 is an apocalyptic number.

3439721287 is a deficient number, since it is larger than the sum of its proper divisors (1).

3439721287 is an equidigital number, since it uses as much as digits as its factorization.

3439721287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 3439721287 is about 58649.1371377278. The cubic root of 3439721287 is about 1509.5276927298.

The spelling of 3439721287 in words is "three billion, four hundred thirty-nine million, seven hundred twenty-one thousand, two hundred eighty-seven".