1398922 has 8 divisors (see below), whose sum is σ = 2398176. Its totient is φ = 599532.

The previous prime is 1398911. The next prime is 1398967. The reversal of 1398922 is 2298931.

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

It is a plaindrome in base 16.

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, 49948 + ... + 49975.

It is an arithmetic number, because the mean of its divisors is an integer number (299772).

2^1398922 is an apocalyptic number.

1398922 is a deficient number, since it is larger than the sum of its proper divisors (999254).

1398922 is an equidigital number, since it uses as much as digits as its factorization.

1398922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99932.

The product of its digits is 7776, while the sum is 34.

The square root of 1398922 is about 1182.7603307518. The cubic root of 1398922 is about 111.8401738191.

Subtracting 1398922 from its reverse (2298931), we obtain a palindrome (900009).

The spelling of 1398922 in words is "one million, three hundred ninety-eight thousand, nine hundred twenty-two".