199993374 has 48 divisors (see below), whose sum is σ = 513571968. Its totient is φ = 57139992.

The previous prime is 199993361. The next prime is 199993427. The reversal of 199993374 is 473399991.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 199993374.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25992 + ... + 32795.

It is an arithmetic number, because the mean of its divisors is an integer number (10699416).

Almost surely, 2^199993374 is an apocalyptic number.

199993374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

199993374 is an abundant number, since it is smaller than the sum of its proper divisors (313578594).

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

199993374 is an equidigital number, since it uses as much as digits as its factorization.

199993374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58811 (or 58799 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 54.

The square root of 199993374 is about 14141.9013573140. The cubic root of 199993374 is about 584.7970893907.

The spelling of 199993374 in words is "one hundred ninety-nine million, nine hundred ninety-three thousand, three hundred seventy-four".