39344213 has 4 divisors (see below), whose sum is σ = 40700940. Its totient is φ = 37987488.

The previous prime is 39344203. The next prime is 39344233. The reversal of 39344213 is 31244393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31244393 = 199 ⋅157007.

It can be written as a sum of positive squares in 2 ways, for example, as 27899524 + 11444689 = 5282^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 39344213 - 2⁴ = 39344197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1356697 = 39344213 / (3 + 9 + 3 + 4 + 4 + 2 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39344203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678320 + ... + 678377.

It is an arithmetic number, because the mean of its divisors is an integer number (10175235).

Almost surely, 2^39344213 is an apocalyptic number.

It is an amenable number.

39344213 is a deficient number, since it is larger than the sum of its proper divisors (1356727).

39344213 is a wasteful number, since it uses less digits than its factorization.

39344213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356726.

The product of its digits is 7776, while the sum is 29.

The square root of 39344213 is about 6272.4965524104. The cubic root of 39344213 is about 340.1159149177.

The spelling of 39344213 in words is "thirty-nine million, three hundred forty-four thousand, two hundred thirteen".