1390376021747 has 2 divisors, whose sum is σ = 1390376021748. Its totient is φ = 1390376021746.

The previous prime is 1390376021687. The next prime is 1390376021777. The reversal of 1390376021747 is 7471206730931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1390376021747 - 2⁸ = 1390376021491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1390376021695 and 1390376021704.

It is not a weakly prime, because it can be changed into another prime (1390376021777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695188010873 + 695188010874.

It is an arithmetic number, because the mean of its divisors is an integer number (695188010874).

Almost surely, 2^{1390376021747} is an apocalyptic number.

1390376021747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390376021747 is an equidigital number, since it uses as much as digits as its factorization.

1390376021747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1333584, while the sum is 50.

The spelling of 1390376021747 in words is "one trillion, three hundred ninety billion, three hundred seventy-six million, twenty-one thousand, seven hundred forty-seven".