1398579 has 32 divisors (see below), whose sum is σ = 2365440. Its totient is φ = 715392.

The previous prime is 1398577. The next prime is 1398581. The reversal of 1398579 is 9758931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1398577) and next prime (1398581).

It is not a de Polignac number, because 1398579 - 2¹ = 1398577 is a prime.

1398579 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1398579.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398577) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12777 + ... + 12885.

It is an arithmetic number, because the mean of its divisors is an integer number (73920).

2^1398579 is an apocalyptic number.

1398579 is a deficient number, since it is larger than the sum of its proper divisors (966861).

1398579 is a wasteful number, since it uses less digits than its factorization.

1398579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179.

The product of its digits is 68040, while the sum is 42.

The square root of 1398579 is about 1182.6153220722. The cubic root of 1398579 is about 111.8310324195.

The spelling of 1398579 in words is "one million, three hundred ninety-eight thousand, five hundred seventy-nine".