206149408 has 12 divisors (see below), whose sum is σ = 405856710. Its totient is φ = 103074688.

The previous prime is 206149387. The next prime is 206149409. The reversal of 206149408 is 804941602.

It can be written as a sum of positive squares in only one way, i.e., 197458704 + 8690704 = 14052^2 + 2948^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (206149409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221053 + ... + 3221116.

Almost surely, 2^206149408 is an apocalyptic number.

It is an amenable number.

206149408 is a deficient number, since it is larger than the sum of its proper divisors (199707302).

206149408 is an equidigital number, since it uses as much as digits as its factorization.

206149408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6442179 (or 6442171 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 206149408 is about 14357.9040253095. The cubic root of 206149408 is about 590.7368061826.

The spelling of 206149408 in words is "two hundred six million, one hundred forty-nine thousand, four hundred eight".