893937979439 has 2 divisors, whose sum is σ = 893937979440. Its totient is φ = 893937979438.

The previous prime is 893937979421. The next prime is 893937979453. The reversal of 893937979439 is 934979739398.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 893937979439 - 2⁸ = 893937979183 is a prime.

It is a super-2 number, since 2×893937979439² (a number of 25 digits) contains 22 as substring.

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 (893937975439) 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, 446968989719 + 446968989720.

It is an arithmetic number, because the mean of its divisors is an integer number (446968989720).

Almost surely, 2^893937979439 is an apocalyptic number.

893937979439 is a deficient number, since it is larger than the sum of its proper divisors (1).

893937979439 is an equidigital number, since it uses as much as digits as its factorization.

893937979439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2499898464, while the sum is 80.

The spelling of 893937979439 in words is "eight hundred ninety-three billion, nine hundred thirty-seven million, nine hundred seventy-nine thousand, four hundred thirty-nine".