199597380 has 24 divisors (see below), whose sum is σ = 558872832. Its totient is φ = 53225952.

The previous prime is 199597373. The next prime is 199597439. The reversal of 199597380 is 83795991.

It is a happy number.

It is a super-2 number, since 2×199597380² = 79678228205728800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1663252 + ... + 1663371.

It is an arithmetic number, because the mean of its divisors is an integer number (23286368).

Almost surely, 2^199597380 is an apocalyptic number.

199597380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199597380 is an abundant number, since it is smaller than the sum of its proper divisors (359275452).

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

199597380 is a wasteful number, since it uses less digits than its factorization.

199597380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326635 (or 3326633 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 51.

The square root of 199597380 is about 14127.8936858967. The cubic root of 199597380 is about 584.4108613451.

The spelling of 199597380 in words is "one hundred ninety-nine million, five hundred ninety-seven thousand, three hundred eighty".