228824779 has 4 divisors (see below), whose sum is σ = 230228776. Its totient is φ = 227420784.

The previous prime is 228824753. The next prime is 228824839. The reversal of 228824779 is 977428822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228824779 - 2¹³ = 228816587 is a prime.

It is a super-5 number, since 5×228824779⁵ (a number of 43 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228824749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701754 + ... + 702079.

It is an arithmetic number, because the mean of its divisors is an integer number (57557194).

Almost surely, 2^228824779 is an apocalyptic number.

228824779 is a deficient number, since it is larger than the sum of its proper divisors (1403997).

228824779 is a wasteful number, since it uses less digits than its factorization.

228824779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403996.

The product of its digits is 903168, while the sum is 49.

The square root of 228824779 is about 15126.9553777355. The cubic root of 228824779 is about 611.6472355424.

The spelling of 228824779 in words is "two hundred twenty-eight million, eight hundred twenty-four thousand, seven hundred seventy-nine".