1369911479 has 2 divisors, whose sum is σ = 1369911480. Its totient is φ = 1369911478.

The previous prime is 1369911467. The next prime is 1369911497. The reversal of 1369911479 is 9741199631.

It is a happy number.

Together with next prime (1369911497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1369911479 - 2⁸ = 1369911223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1369911449) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684955739 + 684955740.

It is an arithmetic number, because the mean of its divisors is an integer number (684955740).

Almost surely, 2^1369911479 is an apocalyptic number.

1369911479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1369911479 is an equidigital number, since it uses as much as digits as its factorization.

1369911479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 50.

The square root of 1369911479 is about 37012.3152342568. The cubic root of 1369911479 is about 1110.6166200341.

The spelling of 1369911479 in words is "one billion, three hundred sixty-nine million, nine hundred eleven thousand, four hundred seventy-nine".