228908979 has 54 divisors (see below), whose sum is σ = 381163380. Its totient is φ = 131953536.

The previous prime is 228908971. The next prime is 228908987. The reversal of 228908979 is 979809822.

It is an interprime number because it is at equal distance from previous prime (228908971) and next prime (228908987).

It is not a de Polignac number, because 228908979 - 2³ = 228908971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228908971) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2571967 + ... + 2572055.

Almost surely, 2^228908979 is an apocalyptic number.

228908979 is a deficient number, since it is larger than the sum of its proper divisors (152254401).

228908979 is a wasteful number, since it uses less digits than its factorization.

228908979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 228908979 is about 15129.7382330297. The cubic root of 228908979 is about 611.7222483708.

The spelling of 228908979 in words is "two hundred twenty-eight million, nine hundred eight thousand, nine hundred seventy-nine".