199027429 has 2 divisors, whose sum is σ = 199027430. Its totient is φ = 199027428.

The previous prime is 199027399. The next prime is 199027447. The reversal of 199027429 is 924720991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151044100 + 47983329 = 12290^2 + 6927^2 .

It is a cyclic number.

It is not a de Polignac number, because 199027429 - 2⁵ = 199027397 is a prime.

It is a super-2 number, since 2×199027429² = 79223834988700082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199027459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99513714 + 99513715.

It is an arithmetic number, because the mean of its divisors is an integer number (99513715).

Almost surely, 2^199027429 is an apocalyptic number.

It is an amenable number.

199027429 is a deficient number, since it is larger than the sum of its proper divisors (1).

199027429 is an equidigital number, since it uses as much as digits as its factorization.

199027429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 199027429 is about 14107.7081412964. The cubic root of 199027429 is about 583.8540686305.

The spelling of 199027429 in words is "one hundred ninety-nine million, twenty-seven thousand, four hundred twenty-nine".