39670229 has 2 divisors, whose sum is σ = 39670230. Its totient is φ = 39670228.

The previous prime is 39670217. The next prime is 39670261. The reversal of 39670229 is 92207693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36881329 + 2788900 = 6073^2 + 1670^2 .

It is an emirp because it is prime and its reverse (92207693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39670229 - 2¹⁶ = 39604693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39670192 and 39670201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39670429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19835114 + 19835115.

It is an arithmetic number, because the mean of its divisors is an integer number (19835115).

Almost surely, 2^39670229 is an apocalyptic number.

It is an amenable number.

39670229 is a deficient number, since it is larger than the sum of its proper divisors (1).

39670229 is an equidigital number, since it uses as much as digits as its factorization.

39670229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 39670229 is about 6298.4306775577. The cubic root of 39670229 is about 341.0527605603.

The spelling of 39670229 in words is "thirty-nine million, six hundred seventy thousand, two hundred twenty-nine".