199231400 has 24 divisors (see below), whose sum is σ = 463213470. Its totient is φ = 79692480.

The previous prime is 199231387. The next prime is 199231433. The reversal of 199231400 is 4132991.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 169572484 + 29658916 = 13022^2 + 5446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 497879 + ... + 498278.

Almost surely, 2^199231400 is an apocalyptic number.

199231400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199231400 is an abundant number, since it is smaller than the sum of its proper divisors (263982070).

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

199231400 is a wasteful number, since it uses less digits than its factorization.

199231400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996173 (or 996164 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 199231400 is about 14114.9353523139. The cubic root of 199231400 is about 584.0534526041.

The spelling of 199231400 in words is "one hundred ninety-nine million, two hundred thirty-one thousand, four hundred".