1399529 has 2 divisors, whose sum is σ = 1399530. Its totient is φ = 1399528.

The previous prime is 1399513. The next prime is 1399537. The reversal of 1399529 is 9259931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 851929 + 547600 = 923^2 + 740^2 .

It is an emirp because it is prime and its reverse (9259931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1399529 - 2⁴ = 1399513 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1399492 and 1399501.

It is not a weakly prime, because it can be changed into another prime (1399549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699764 + 699765.

It is an arithmetic number, because the mean of its divisors is an integer number (699765).

2^1399529 is an apocalyptic number.

It is an amenable number.

1399529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399529 is an equidigital number, since it uses as much as digits as its factorization.

1399529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21870, while the sum is 38.

The square root of 1399529 is about 1183.0169060500. The cubic root of 1399529 is about 111.8563475036.

The spelling of 1399529 in words is "one million, three hundred ninety-nine thousand, five hundred twenty-nine".