1398489 has 16 divisors (see below), whose sum is σ = 1966272. Its totient is φ = 883008.

The previous prime is 1398473. The next prime is 1398493. The reversal of 1398489 is 9848931.

It is not a de Polignac number, because 1398489 - 2⁴ = 1398473 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1398489.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398289) 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, 4627 + ... + 4919.

It is an arithmetic number, because the mean of its divisors is an integer number (122892).

2^1398489 is an apocalyptic number.

It is an amenable number.

1398489 is a deficient number, since it is larger than the sum of its proper divisors (567783).

1398489 is a wasteful number, since it uses less digits than its factorization.

1398489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376.

The product of its digits is 62208, while the sum is 42.

The square root of 1398489 is about 1182.5772702027. The cubic root of 1398489 is about 111.8286335540.

The spelling of 1398489 in words is "one million, three hundred ninety-eight thousand, four hundred eighty-nine".