228694999 has 16 divisors (see below), whose sum is σ = 261309888. Its totient is φ = 198277632.

The previous prime is 228694993. The next prime is 228695011. The reversal of 228694999 is 999496822.

It is a cyclic number.

It is not a de Polignac number, because 228694999 - 2⁷ = 228694871 is a prime.

It is a super-2 number, since 2×228694999² = 104602805135220002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228694993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166614 + ... + 167980.

It is an arithmetic number, because the mean of its divisors is an integer number (16331868).

Almost surely, 2^228694999 is an apocalyptic number.

228694999 is a deficient number, since it is larger than the sum of its proper divisors (32614889).

228694999 is a wasteful number, since it uses less digits than its factorization.

228694999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154.

The product of its digits is 5038848, while the sum is 58.

The square root of 228694999 is about 15122.6650759712. The cubic root of 228694999 is about 611.5315799591.

The spelling of 228694999 in words is "two hundred twenty-eight million, six hundred ninety-four thousand, nine hundred ninety-nine".