1390947419 has 2 divisors, whose sum is σ = 1390947420. Its totient is φ = 1390947418.

The previous prime is 1390947367. The next prime is 1390947431. The reversal of 1390947419 is 9147490931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1390947419 - 2²⁰ = 1389898843 is a prime.

It is a super-2 number, since 2×1390947419² = 3869469444845523122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1390947119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695473709 + 695473710.

It is an arithmetic number, because the mean of its divisors is an integer number (695473710).

Almost surely, 2^1390947419 is an apocalyptic number.

1390947419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390947419 is an equidigital number, since it uses as much as digits as its factorization.

1390947419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1390947419 is about 37295.4074786695. The cubic root of 1390947419 is about 1116.2725305201.

The spelling of 1390947419 in words is "one billion, three hundred ninety million, nine hundred forty-seven thousand, four hundred nineteen".