1398622 has 8 divisors (see below), whose sum is σ = 2104200. Its totient is φ = 697224.

The previous prime is 1398619. The next prime is 1398623. The reversal of 1398622 is 2268931.

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

It is a super-2 number, since 2×1398622² = 3912286997768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4 + ... + 1672.

It is an arithmetic number, because the mean of its divisors is an integer number (263025).

2^1398622 is an apocalyptic number.

1398622 is a deficient number, since it is larger than the sum of its proper divisors (705578).

1398622 is a wasteful number, since it uses less digits than its factorization.

1398622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090.

The product of its digits is 5184, while the sum is 31.

The square root of 1398622 is about 1182.6335019777. The cubic root of 1398622 is about 111.8321785078.

The spelling of 1398622 in words is "one million, three hundred ninety-eight thousand, six hundred twenty-two".