206239898 has 4 divisors (see below), whose sum is σ = 309359850. Its totient is φ = 103119948.

The previous prime is 206239871. The next prime is 206239933. The reversal of 206239898 is 898932602.

206239898 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898932602 = 2 ⋅449466301.

It can be written as a sum of positive squares in only one way, i.e., 169963369 + 36276529 = 13037^2 + 6023^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51559973 + ... + 51559976.

Almost surely, 2^206239898 is an apocalyptic number.

206239898 is a deficient number, since it is larger than the sum of its proper divisors (103119952).

206239898 is a wasteful number, since it uses less digits than its factorization.

206239898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103119951.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 206239898 is about 14361.0549055423. The cubic root of 206239898 is about 590.8232288642.

The spelling of 206239898 in words is "two hundred six million, two hundred thirty-nine thousand, eight hundred ninety-eight".