1995444 has 36 divisors (see below), whose sum is σ = 5503680. Its totient is φ = 604560.

The previous prime is 1995431. The next prime is 1995449. The reversal of 1995444 is 4445991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1995399 and 1995408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2124 + ... + 2915.

It is an arithmetic number, because the mean of its divisors is an integer number (152880).

2^1995444 is an apocalyptic number.

It is an amenable number.

1995444 is an abundant number, since it is smaller than the sum of its proper divisors (3508236).

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

1995444 is a wasteful number, since it uses less digits than its factorization.

1995444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060 (or 5055 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1995444 is about 1412.6018547347. The cubic root of 1995444 is about 125.8963622469.

The spelling of 1995444 in words is "one million, nine hundred ninety-five thousand, four hundred forty-four".