1398599 has 2 divisors, whose sum is σ = 1398600. Its totient is φ = 1398598.

The previous prime is 1398581. The next prime is 1398611. The reversal of 1398599 is 9958931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398599 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1398559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699299 + 699300.

It is an arithmetic number, because the mean of its divisors is an integer number (699300).

2^1398599 is an apocalyptic number.

1398599 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398599 is an equidigital number, since it uses as much as digits as its factorization.

1398599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 44.

The square root of 1398599 is about 1182.6237778770. The cubic root of 1398599 is about 111.8315654867.

The spelling of 1398599 in words is "one million, three hundred ninety-eight thousand, five hundred ninety-nine".