228871399 has 4 divisors (see below), whose sum is σ = 230673664. Its totient is φ = 227069136.

The previous prime is 228871373. The next prime is 228871427. The reversal of 228871399 is 993178822.

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 228871399 - 2⁷ = 228871271 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 (228871309) 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, 900942 + ... + 901195.

It is an arithmetic number, because the mean of its divisors is an integer number (57668416).

Almost surely, 2^228871399 is an apocalyptic number.

228871399 is a deficient number, since it is larger than the sum of its proper divisors (1802265).

228871399 is a wasteful number, since it uses less digits than its factorization.

228871399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802264.

The product of its digits is 435456, while the sum is 49.

The square root of 228871399 is about 15128.4962570640. The cubic root of 228871399 is about 611.6887710468.

The spelling of 228871399 in words is "two hundred twenty-eight million, eight hundred seventy-one thousand, three hundred ninety-nine".