228149039 has 4 divisors (see below), whose sum is σ = 228243624. Its totient is φ = 228054456.

The previous prime is 228148997. The next prime is 228149059. The reversal of 228149039 is 930941822.

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 228149039 - 2⁸ = 228148783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228148993 and 228149011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228149059) 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, 43577 + ... + 48530.

It is an arithmetic number, because the mean of its divisors is an integer number (57060906).

Almost surely, 2^228149039 is an apocalyptic number.

228149039 is a deficient number, since it is larger than the sum of its proper divisors (94585).

228149039 is an equidigital number, since it uses as much as digits as its factorization.

228149039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94584.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 228149039 is about 15104.6032387481. The cubic root of 228149039 is about 611.0445589368.

The spelling of 228149039 in words is "two hundred twenty-eight million, one hundred forty-nine thousand, thirty-nine".