199389429 has 12 divisors (see below), whose sum is σ = 289301376. Its totient is φ = 132328872.

The previous prime is 199389403. The next prime is 199389457. The reversal of 199389429 is 924983991.

It is not a de Polignac number, because 199389429 - 2⁵ = 199389397 is a prime.

It is a super-2 number, since 2×199389429² = 79512288793892082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199389469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47667 + ... + 51680.

It is an arithmetic number, because the mean of its divisors is an integer number (24108448).

Almost surely, 2^199389429 is an apocalyptic number.

It is an amenable number.

199389429 is a deficient number, since it is larger than the sum of its proper divisors (89911947).

199389429 is a wasteful number, since it uses less digits than its factorization.

199389429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99576 (or 99573 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 199389429 is about 14120.5321783565. The cubic root of 199389429 is about 584.2078342103.

The spelling of 199389429 in words is "one hundred ninety-nine million, three hundred eighty-nine thousand, four hundred twenty-nine".