1622443 has 6 divisors (see below), whose sum is σ = 1696604. Its totient is φ = 1551396.

The previous prime is 1622437. The next prime is 1622449. The reversal of 1622443 is 3442261.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1622437) and next prime (1622449).

It is not a de Polignac number, because 1622443 - 2⁹ = 1621931 is a prime.

It is a Duffinian number.

1622443 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1622449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1005 + ... + 2062.

2^1622443 is an apocalyptic number.

1622443 is a deficient number, since it is larger than the sum of its proper divisors (74161).

1622443 is an equidigital number, since it uses as much as digits as its factorization.

1622443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113 (or 3090 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 1622443 is about 1273.7515456320. The cubic root of 1622443 is about 117.5050367541.

The spelling of 1622443 in words is "one million, six hundred twenty-two thousand, four hundred forty-three".