39998228 has 12 divisors (see below), whose sum is σ = 70041972. Its totient is φ = 19986240.

The previous prime is 39998227. The next prime is 39998237. The reversal of 39998228 is 82289993.

It can be written as a sum of positive squares in 2 ways, for example, as 37724164 + 2274064 = 6142^2 + 1508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39998227) 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, 8558 + ... + 12378.

It is an arithmetic number, because the mean of its divisors is an integer number (5836831).

Almost surely, 2^39998228 is an apocalyptic number.

It is an amenable number.

39998228 is a deficient number, since it is larger than the sum of its proper divisors (30043744).

39998228 is a wasteful number, since it uses less digits than its factorization.

39998228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442 (or 6440 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 39998228 is about 6324.4152298849. The cubic root of 39998228 is about 341.9901391318.

The spelling of 39998228 in words is "thirty-nine million, nine hundred ninety-eight thousand, two hundred twenty-eight".