1999325 has 6 divisors (see below), whose sum is σ = 2479194. Its totient is φ = 1599440.

The previous prime is 1999307. The next prime is 1999331. The reversal of 1999325 is 5239991.

It can be written as a sum of positive squares in 3 ways, for example, as 89401 + 1909924 = 299^2 + 1382^2 .

It is not a de Polignac number, because 1999325 - 2⁸ = 1999069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39962 + ... + 40011.

It is an arithmetic number, because the mean of its divisors is an integer number (413199).

2^1999325 is an apocalyptic number.

It is an amenable number.

1999325 is a deficient number, since it is larger than the sum of its proper divisors (479869).

1999325 is an equidigital number, since it uses as much as digits as its factorization.

1999325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79983 (or 79978 counting only the distinct ones).

The product of its digits is 21870, while the sum is 38.

The square root of 1999325 is about 1413.9748936951. The cubic root of 1999325 is about 125.9779292828.

The spelling of 1999325 in words is "one million, nine hundred ninety-nine thousand, three hundred twenty-five".