199406629 has 2 divisors, whose sum is σ = 199406630. Its totient is φ = 199406628.

The previous prime is 199406567. The next prime is 199406689. The reversal of 199406629 is 926604991.

199406629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198866404 + 540225 = 14102^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 199406629 - 2¹⁵ = 199373861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199406689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99703314 + 99703315.

It is an arithmetic number, because the mean of its divisors is an integer number (99703315).

Almost surely, 2^199406629 is an apocalyptic number.

It is an amenable number.

199406629 is a deficient number, since it is larger than the sum of its proper divisors (1).

199406629 is an equidigital number, since it uses as much as digits as its factorization.

199406629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 199406629 is about 14121.1412074237. The cubic root of 199406629 is about 584.2246323021.

It can be divided in two parts, 19940 and 6629, that added together give a square (26569 = 163²).

The spelling of 199406629 in words is "one hundred ninety-nine million, four hundred six thousand, six hundred twenty-nine".