228949859 has 2 divisors, whose sum is σ = 228949860. Its totient is φ = 228949858.

The previous prime is 228949789. The next prime is 228949871. The reversal of 228949859 is 958949822.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228949859 is a prime.

It is a super-2 number, since 2×228949859² = 104836075872239762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (228943859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114474929 + 114474930.

It is an arithmetic number, because the mean of its divisors is an integer number (114474930).

Almost surely, 2^228949859 is an apocalyptic number.

228949859 is a deficient number, since it is larger than the sum of its proper divisors (1).

228949859 is an equidigital number, since it uses as much as digits as its factorization.

228949859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 56.

The square root of 228949859 is about 15131.0891544528. The cubic root of 228949859 is about 611.7586612675.

The spelling of 228949859 in words is "two hundred twenty-eight million, nine hundred forty-nine thousand, eight hundred fifty-nine".