199397700 has 180 divisors, whose sum is σ = 655374720. Its totient is φ = 52436160.

The previous prime is 199397689. The next prime is 199397701. The reversal of 199397700 is 7793991.

199397700 is a `hidden beast` number, since 199 + 397 + 70 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (199397701) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 834181 + ... + 834419.

Almost surely, 2^199397700 is an apocalyptic number.

199397700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199397700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327687360).

199397700 is an abundant number, since it is smaller than the sum of its proper divisors (455977020).

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

199397700 is a wasteful number, since it uses less digits than its factorization.

199397700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 107163, while the sum is 45.

The square root of 199397700 is about 14120.8250467173. The cubic root of 199397700 is about 584.2159120645.

The spelling of 199397700 in words is "one hundred ninety-nine million, three hundred ninety-seven thousand, seven hundred".