1995799 has 4 divisors (see below), whose sum is σ = 2149336. Its totient is φ = 1842264.

The previous prime is 1995797. The next prime is 1995827. The reversal of 1995799 is 9975991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1995799 - 2¹ = 1995797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995797) 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, 76749 + ... + 76774.

It is an arithmetic number, because the mean of its divisors is an integer number (537334).

2^1995799 is an apocalyptic number.

1995799 is a deficient number, since it is larger than the sum of its proper divisors (153537).

1995799 is a wasteful number, since it uses less digits than its factorization.

1995799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153536.

The product of its digits is 229635, while the sum is 49.

The square root of 1995799 is about 1412.7275038025. The cubic root of 1995799 is about 125.9038276796.

It can be divided in two parts, 1995 and 799, that multiplied together give a triangular number (1594005 = T₁₇₈₅).

The spelling of 1995799 in words is "one million, nine hundred ninety-five thousand, seven hundred ninety-nine".