206429439 has 8 divisors (see below), whose sum is σ = 287206272. Its totient is φ = 131636120.

The previous prime is 206429437. The next prime is 206429441. The reversal of 206429439 is 934924602.

It is an interprime number because it is at equal distance from previous prime (206429437) and next prime (206429441).

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

It is a cyclic number.

It is not a de Polignac number, because 206429439 - 2¹ = 206429437 is a prime.

It is a super-2 number, since 2×206429439² = 85226226571709442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206429397 and 206429406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206429437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495797 + ... + 1495934.

It is an arithmetic number, because the mean of its divisors is an integer number (35900784).

Almost surely, 2^206429439 is an apocalyptic number.

206429439 is a deficient number, since it is larger than the sum of its proper divisors (80776833).

206429439 is a wasteful number, since it uses less digits than its factorization.

206429439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991757.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 206429439 is about 14367.6525222459. The cubic root of 206429439 is about 591.0041685340.

The spelling of 206429439 in words is "two hundred six million, four hundred twenty-nine thousand, four hundred thirty-nine".