1398634 has 8 divisors (see below), whose sum is σ = 2106720. Its totient is φ = 696396.

The previous prime is 1398623. The next prime is 1398659. The reversal of 1398634 is 4368931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1398634.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804 + ... + 1855.

It is an arithmetic number, because the mean of its divisors is an integer number (263340).

2^1398634 is an apocalyptic number.

1398634 is a deficient number, since it is larger than the sum of its proper divisors (708086).

1398634 is a wasteful number, since it uses less digits than its factorization.

1398634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924.

The product of its digits is 15552, while the sum is 34.

The square root of 1398634 is about 1182.6385753898. The cubic root of 1398634 is about 111.8324983422.

The spelling of 1398634 in words is "one million, three hundred ninety-eight thousand, six hundred thirty-four".