1999022 has 8 divisors (see below), whose sum is σ = 3128976. Its totient is φ = 956032.

The previous prime is 1999021. The next prime is 1999033. The reversal of 1999022 is 2209991.

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 1999022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21683 + ... + 21774.

It is an arithmetic number, because the mean of its divisors is an integer number (391122).

2^1999022 is an apocalyptic number.

1999022 is a deficient number, since it is larger than the sum of its proper divisors (1129954).

1999022 is a wasteful number, since it uses less digits than its factorization.

1999022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43482.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1999022 is about 1413.8677448757. The cubic root of 1999022 is about 125.9715649280.

The spelling of 1999022 in words is "one million, nine hundred ninety-nine thousand, twenty-two".