228977949 has 16 divisors (see below), whose sum is σ = 335347200. Its totient is φ = 138329136.

The previous prime is 228977929. The next prime is 228977951. The reversal of 228977949 is 949779822.

It is not a de Polignac number, because 228977949 - 2¹⁵ = 228945181 is a prime.

It is a super-2 number, since 2×228977949² = 104861802256493202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228977929) 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, 86019 + ... + 88640.

It is an arithmetic number, because the mean of its divisors is an integer number (20959200).

Almost surely, 2^228977949 is an apocalyptic number.

It is an amenable number.

228977949 is a deficient number, since it is larger than the sum of its proper divisors (106369251).

228977949 is a wasteful number, since it uses less digits than its factorization.

228977949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174704.

The product of its digits is 4572288, while the sum is 57.

The square root of 228977949 is about 15132.0173473334. The cubic root of 228977949 is about 611.7836792608.

The spelling of 228977949 in words is "two hundred twenty-eight million, nine hundred seventy-seven thousand, nine hundred forty-nine".