199717485 has 16 divisors (see below), whose sum is σ = 348598080. Its totient is φ = 96832640.

The previous prime is 199717457. The next prime is 199717549. The reversal of 199717485 is 584717991.

It is a happy number.

It is not a de Polignac number, because 199717485 - 2⁶ = 199717421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605040 + ... + 605369.

It is an arithmetic number, because the mean of its divisors is an integer number (21787380).

Almost surely, 2^199717485 is an apocalyptic number.

199717485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199717485 is a deficient number, since it is larger than the sum of its proper divisors (148880595).

199717485 is a wasteful number, since it uses less digits than its factorization.

199717485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210428.

The product of its digits is 635040, while the sum is 51.

The square root of 199717485 is about 14132.1436802772. The cubic root of 199717485 is about 584.5280582616.

The spelling of 199717485 in words is "one hundred ninety-nine million, seven hundred seventeen thousand, four hundred eighty-five".