199287960 has 64 divisors (see below), whose sum is σ = 629337600. Its totient is φ = 50345856.

The previous prime is 199287931. The next prime is 199287989. The reversal of 199287960 is 69782991.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (199287931) and next prime (199287989).

It is a super-4 number, since 4×199287960⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41424 + ... + 45983.

It is an arithmetic number, because the mean of its divisors is an integer number (9833400).

Almost surely, 2^199287960 is an apocalyptic number.

199287960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199287960 is an abundant number, since it is smaller than the sum of its proper divisors (430049640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199287960 is a wasteful number, since it uses less digits than its factorization.

199287960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87440 (or 87436 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 199287960 is about 14116.9387616438. The cubic root of 199287960 is about 584.1087165464.

The spelling of 199287960 in words is "one hundred ninety-nine million, two hundred eighty-seven thousand, nine hundred sixty".