1398369 has 16 divisors (see below), whose sum is σ = 2256768. Its totient is φ = 751872.

The previous prime is 1398367. The next prime is 1398401. The reversal of 1398369 is 9638931.

It is not a de Polignac number, because 1398369 - 2¹ = 1398367 is a prime.

It is a super-2 number, since 2×1398369² = 3910871720322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1398367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1602 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (141048).

2^1398369 is an apocalyptic number.

It is an amenable number.

1398369 is a deficient number, since it is larger than the sum of its proper divisors (858399).

1398369 is a wasteful number, since it uses less digits than its factorization.

1398369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944.

The product of its digits is 34992, while the sum is 39.

The square root of 1398369 is about 1182.5265324719. The cubic root of 1398369 is about 111.8254349065.

The spelling of 1398369 in words is "one million, three hundred ninety-eight thousand, three hundred sixty-nine".