39378223 has 2 divisors, whose sum is σ = 39378224. Its totient is φ = 39378222.

The previous prime is 39378221. The next prime is 39378253. The reversal of 39378223 is 32287393.

It is a weak prime.

It is an emirp because it is prime and its reverse (32287393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39378223 - 2¹ = 39378221 is a prime.

Together with 39378221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39378221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19689111 + 19689112.

It is an arithmetic number, because the mean of its divisors is an integer number (19689112).

Almost surely, 2^39378223 is an apocalyptic number.

39378223 is a deficient number, since it is larger than the sum of its proper divisors (1).

39378223 is an equidigital number, since it uses as much as digits as its factorization.

39378223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 39378223 is about 6275.2070085376. The cubic root of 39378223 is about 340.2138879101.

It can be divided in two parts, 39378 and 223, that added together give a square (39601 = 199²).

The spelling of 39378223 in words is "thirty-nine million, three hundred seventy-eight thousand, two hundred twenty-three".