1398026 has 8 divisors (see below), whose sum is σ = 2396640. Its totient is φ = 599148.

The previous prime is 1398017. The next prime is 1398031. The reversal of 1398026 is 6208931.

1398026 is nontrivially palindromic in base 9.

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

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 1398026.

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, 49916 + ... + 49943.

It is an arithmetic number, because the mean of its divisors is an integer number (299580).

2^1398026 is an apocalyptic number.

1398026 is a deficient number, since it is larger than the sum of its proper divisors (998614).

1398026 is an equidigital number, since it uses as much as digits as its factorization.

1398026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99868.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1398026 is about 1182.3814951191. The cubic root of 1398026 is about 111.8162910966.

The spelling of 1398026 in words is "one million, three hundred ninety-eight thousand, twenty-six".