228497399 has 16 divisors (see below), whose sum is σ = 255962784. Its totient is φ = 202608000.

The previous prime is 228497377. The next prime is 228497411. The reversal of 228497399 is 993794822.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228497399 is a prime.

It is a super-3 number, since 3×228497399³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228497399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228497359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30749 + ... + 37449.

It is an arithmetic number, because the mean of its divisors is an integer number (15997674).

Almost surely, 2^228497399 is an apocalyptic number.

228497399 is a deficient number, since it is larger than the sum of its proper divisors (27465385).

228497399 is a wasteful number, since it uses less digits than its factorization.

228497399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6818.

The product of its digits is 1959552, while the sum is 53.

The square root of 228497399 is about 15116.1304241529. The cubic root of 228497399 is about 611.3554014093.

The spelling of 228497399 in words is "two hundred twenty-eight million, four hundred ninety-seven thousand, three hundred ninety-nine".