1390426319 has 2 divisors, whose sum is σ = 1390426320. Its totient is φ = 1390426318.

The previous prime is 1390426259. The next prime is 1390426339. The reversal of 1390426319 is 9136240931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390426319 is a prime.

It is a super-2 number, since 2×1390426319² = 3866570697135779522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1390426339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695213159 + 695213160.

It is an arithmetic number, because the mean of its divisors is an integer number (695213160).

Almost surely, 2^1390426319 is an apocalyptic number.

1390426319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390426319 is an equidigital number, since it uses as much as digits as its factorization.

1390426319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 1390426319 is about 37288.4207093838. The cubic root of 1390426319 is about 1116.1331142096.

The spelling of 1390426319 in words is "one billion, three hundred ninety million, four hundred twenty-six thousand, three hundred nineteen".