199697400 has 288 divisors, whose sum is σ = 796199040. Its totient is φ = 45567360.

The previous prime is 199697383. The next prime is 199697411. The reversal of 199697400 is 4796991.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 339907 + ... + 340493.

It is an arithmetic number, because the mean of its divisors is an integer number (2764580).

Almost surely, 2^199697400 is an apocalyptic number.

199697400 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 199697400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398099520).

199697400 is an abundant number, since it is smaller than the sum of its proper divisors (596501640).

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

199697400 is a wasteful number, since it uses less digits than its factorization.

199697400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 199697400 is about 14131.4330483501. The cubic root of 199697400 is about 584.5084628489.

The spelling of 199697400 in words is "one hundred ninety-nine million, six hundred ninety-seven thousand, four hundred".