84752939639 has 2 divisors, whose sum is σ = 84752939640. Its totient is φ = 84752939638.

The previous prime is 84752939599. The next prime is 84752939647. The reversal of 84752939639 is 93693925748.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84752939639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84752939939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42376469819 + 42376469820.

It is an arithmetic number, because the mean of its divisors is an integer number (42376469820).

Almost surely, 2^84752939639 is an apocalyptic number.

84752939639 is a deficient number, since it is larger than the sum of its proper divisors (1).

84752939639 is an equidigital number, since it uses as much as digits as its factorization.

84752939639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88179840, while the sum is 65.

The spelling of 84752939639 in words is "eighty-four billion, seven hundred fifty-two million, nine hundred thirty-nine thousand, six hundred thirty-nine".