1997499 has 16 divisors (see below), whose sum is σ = 3087872. Its totient is φ = 1124928.

The previous prime is 1997473. The next prime is 1997503. The reversal of 1997499 is 9947991.

It is not a de Polignac number, because 1997499 - 2⁵ = 1997467 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1997419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882 + ... + 2184.

It is an arithmetic number, because the mean of its divisors is an integer number (192992).

2^1997499 is an apocalyptic number.

1997499 is a deficient number, since it is larger than the sum of its proper divisors (1090373).

1997499 is a wasteful number, since it uses less digits than its factorization.

1997499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its digits is 183708, while the sum is 48.

The square root of 1997499 is about 1413.3290487356. The cubic root of 1997499 is about 125.9395653740.

The spelling of 1997499 in words is "one million, nine hundred ninety-seven thousand, four hundred ninety-nine".