199993522 has 8 divisors (see below), whose sum is σ = 301787136. Its totient is φ = 99397812.

The previous prime is 199993513. The next prime is 199993543. The reversal of 199993522 is 225399991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299058 + ... + 299725.

It is an arithmetic number, because the mean of its divisors is an integer number (37723392).

Almost surely, 2^199993522 is an apocalyptic number.

199993522 is a deficient number, since it is larger than the sum of its proper divisors (101793614).

199993522 is a wasteful number, since it uses less digits than its factorization.

199993522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598952.

The product of its digits is 393660, while the sum is 49.

The square root of 199993522 is about 14141.9065899899. The cubic root of 199993522 is about 584.7972336454.

The spelling of 199993522 in words is "one hundred ninety-nine million, nine hundred ninety-three thousand, five hundred twenty-two".