1999473 has 8 divisors (see below), whose sum is σ = 3046848. Its totient is φ = 1142544.

The previous prime is 1999471. The next prime is 1999499. The reversal of 1999473 is 3749991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1999473 - 2¹ = 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47586 + ... + 47627.

It is an arithmetic number, because the mean of its divisors is an integer number (380856).

2^1999473 is an apocalyptic number.

It is an amenable number.

1999473 is a deficient number, since it is larger than the sum of its proper divisors (1047375).

1999473 is an equidigital number, since it uses as much as digits as its factorization.

1999473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95223.

The product of its digits is 61236, while the sum is 42.

The square root of 1999473 is about 1414.0272274606. The cubic root of 1999473 is about 125.9810377108.

The spelling of 1999473 in words is "one million, nine hundred ninety-nine thousand, four hundred seventy-three".