1999475 has 6 divisors (see below), whose sum is σ = 2479380. Its totient is φ = 1599560.

The previous prime is 1999471. The next prime is 1999499. The reversal of 1999475 is 5749991.

It is not a de Polignac number, because 1999475 - 2² = 1999471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1999471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39965 + ... + 40014.

It is an arithmetic number, because the mean of its divisors is an integer number (413230).

2^1999475 is an apocalyptic number.

1999475 is a deficient number, since it is larger than the sum of its proper divisors (479905).

1999475 is an equidigital number, since it uses as much as digits as its factorization.

1999475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79989 (or 79984 counting only the distinct ones).

The product of its digits is 102060, while the sum is 44.

The square root of 1999475 is about 1414.0279346604. The cubic root of 1999475 is about 125.9810797155.

The spelling of 1999475 in words is "one million, nine hundred ninety-nine thousand, four hundred seventy-five".