1401031779839 has 2 divisors, whose sum is σ = 1401031779840. Its totient is φ = 1401031779838.

The previous prime is 1401031779811. The next prime is 1401031779841. The reversal of 1401031779839 is 9389771301041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1401031779839 - 2¹² = 1401031775743 is a prime.

Together with 1401031779841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401031779809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700515889919 + 700515889920.

It is an arithmetic number, because the mean of its divisors is an integer number (700515889920).

Almost surely, 2^{1401031779839} is an apocalyptic number.

1401031779839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401031779839 is an equidigital number, since it uses as much as digits as its factorization.

1401031779839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 1401031779839 in words is "one trillion, four hundred one billion, thirty-one million, seven hundred seventy-nine thousand, eight hundred thirty-nine".