228099437 has 4 divisors (see below), whose sum is σ = 228157440. Its totient is φ = 228041436.

The previous prime is 228099419. The next prime is 228099479. The reversal of 228099437 is 734990822.

228099437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 734990822 = 2 ⋅367495411.

It is a cyclic number.

It is not a de Polignac number, because 228099437 - 2¹⁰ = 228098413 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 (228099407) 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, 22637 + ... + 31122.

It is an arithmetic number, because the mean of its divisors is an integer number (57039360).

Almost surely, 2^228099437 is an apocalyptic number.

It is an amenable number.

228099437 is a deficient number, since it is larger than the sum of its proper divisors (58003).

228099437 is an equidigital number, since it uses as much as digits as its factorization.

228099437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58002.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 228099437 is about 15102.9611997118. The cubic root of 228099437 is about 611.0002732232. Note that the first 3 decimals are identical.

The spelling of 228099437 in words is "two hundred twenty-eight million, ninety-nine thousand, four hundred thirty-seven".