199406522 has 16 divisors (see below), whose sum is σ = 345226752. Its totient is φ = 84613200.

The previous prime is 199406513. The next prime is 199406567. The reversal of 199406522 is 225604991.

It is a super-2 number, since 2×199406522² = 79525922032272968, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 69098 + ... + 71925.

It is an arithmetic number, because the mean of its divisors is an integer number (21576672).

Almost surely, 2^199406522 is an apocalyptic number.

199406522 is a deficient number, since it is larger than the sum of its proper divisors (145820230).

199406522 is a wasteful number, since it uses less digits than its factorization.

199406522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141133.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 199406522 is about 14121.1374187776. The cubic root of 199406522 is about 584.2245278054.

It can be divided in two parts, 19940 and 6522, that added together give a palindrome (26462).

The spelling of 199406522 in words is "one hundred ninety-nine million, four hundred six thousand, five hundred twenty-two".