39229813 has 16 divisors (see below), whose sum is σ = 47560320. Its totient is φ = 31608576.

The previous prime is 39229811. The next prime is 39229823. The reversal of 39229813 is 31892293.

It is a cyclic number.

It is not a de Polignac number, because 39229813 - 2¹ = 39229811 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 (39229811) 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, 17145 + ... + 19297.

It is an arithmetic number, because the mean of its divisors is an integer number (2972520).

Almost surely, 2^39229813 is an apocalyptic number.

It is an amenable number.

39229813 is a deficient number, since it is larger than the sum of its proper divisors (8330507).

39229813 is a wasteful number, since it uses less digits than its factorization.

39229813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316.

The product of its digits is 23328, while the sum is 37.

The square root of 39229813 is about 6263.3707378695. The cubic root of 39229813 is about 339.7859465818.

The spelling of 39229813 in words is "thirty-nine million, two hundred twenty-nine thousand, eight hundred thirteen".