1999452 has 48 divisors (see below), whose sum is σ = 5745152. Its totient is φ = 527040.

The previous prime is 1999441. The next prime is 1999471. The reversal of 1999452 is 2549991.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1999452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177 + ... + 2007.

2^1999452 is an apocalyptic number.

1999452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872576).

1999452 is an abundant number, since it is smaller than the sum of its proper divisors (3745700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1999452 is a wasteful number, since it uses less digits than its factorization.

1999452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1856 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 1999452 is about 1414.0198018415. The cubic root of 1999452 is about 125.9805966594.

The spelling of 1999452 in words is "one million, nine hundred ninety-nine thousand, four hundred fifty-two".