1399019 has 2 divisors, whose sum is σ = 1399020. Its totient is φ = 1399018.

The previous prime is 1399009. The next prime is 1399033. The reversal of 1399019 is 9109931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1399019 - 2⁴ = 1399003 is a prime.

It is a super-2 number, since 2×1399019² = 3914508324722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1399009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699509 + 699510.

It is an arithmetic number, because the mean of its divisors is an integer number (699510).

2^1399019 is an apocalyptic number.

1399019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399019 is an equidigital number, since it uses as much as digits as its factorization.

1399019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 1399019 is about 1182.8013358126. The cubic root of 1399019 is about 111.8427587253.

The spelling of 1399019 in words is "one million, three hundred ninety-nine thousand, nineteen".