206423439 has 8 divisors (see below), whose sum is σ = 275592240. Its totient is φ = 137435136.

The previous prime is 206423417. The next prime is 206423461. The reversal of 206423439 is 934324602.

It is an interprime number because it is at equal distance from previous prime (206423417) and next prime (206423461).

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

It is not a de Polignac number, because 206423439 - 2⁷ = 206423311 is a prime.

It is a super-2 number, since 2×206423439² = 85221272337173442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206423339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42432 + ... + 47045.

It is an arithmetic number, because the mean of its divisors is an integer number (34449030).

Almost surely, 2^206423439 is an apocalyptic number.

206423439 is a deficient number, since it is larger than the sum of its proper divisors (69168801).

206423439 is an equidigital number, since it uses as much as digits as its factorization.

206423439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90249.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 206423439 is about 14367.4437183516. The cubic root of 206423439 is about 590.9984425107.

The spelling of 206423439 in words is "two hundred six million, four hundred twenty-three thousand, four hundred thirty-nine".