1398464 has 14 divisors (see below), whose sum is σ = 2775204. Its totient is φ = 699200.

The previous prime is 1398451. The next prime is 1398473. The reversal of 1398464 is 4648931.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10862 + ... + 10989.

2^1398464 is an apocalyptic number.

It is an amenable number.

1398464 is a deficient number, since it is larger than the sum of its proper divisors (1376740).

1398464 is an equidigital number, since it uses as much as digits as its factorization.

1398464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21863 (or 21853 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 1398464 is about 1182.5667000216. The cubic root of 1398464 is about 111.8279671842.

The spelling of 1398464 in words is "one million, three hundred ninety-eight thousand, four hundred sixty-four".