206228399 has 16 divisors (see below), whose sum is σ = 230012160. Its totient is φ = 183617280.

The previous prime is 206228389. The next prime is 206228437. The reversal of 206228399 is 993822602.

It is a cyclic number.

It is not a de Polignac number, because 206228399 - 2⁴ = 206228383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206228389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159347 + ... + 160635.

It is an arithmetic number, because the mean of its divisors is an integer number (14375760).

Almost surely, 2^206228399 is an apocalyptic number.

206228399 is a deficient number, since it is larger than the sum of its proper divisors (23783761).

206228399 is a wasteful number, since it uses less digits than its factorization.

206228399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 206228399 is about 14360.6545463638. The cubic root of 206228399 is about 590.8122481202.

The spelling of 206228399 in words is "two hundred six million, two hundred twenty-eight thousand, three hundred ninety-nine".