199023400 has 24 divisors (see below), whose sum is σ = 462729870. Its totient is φ = 79609280.

The previous prime is 199023373. The next prime is 199023401. The reversal of 199023400 is 4320991.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 149377284 + 49646116 = 12222^2 + 7046^2 .

It is a super-2 number, since 2×199023400² = 79220627495120000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199023401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 497359 + ... + 497758.

Almost surely, 2^199023400 is an apocalyptic number.

199023400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199023400 is an abundant number, since it is smaller than the sum of its proper divisors (263706470).

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

199023400 is a wasteful number, since it uses less digits than its factorization.

199023400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995133 (or 995124 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 199023400 is about 14107.5653462956. The cubic root of 199023400 is about 583.8501288655.

The spelling of 199023400 in words is "one hundred ninety-nine million, twenty-three thousand, four hundred".