39722289 has 4 divisors (see below), whose sum is σ = 52963056. Its totient is φ = 26481524.

The previous prime is 39722279. The next prime is 39722323. The reversal of 39722289 is 98222793.

39722289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39722289 - 2⁹ = 39721777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39722289.

It is not an unprimeable number, because it can be changed into a prime (39722209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6620379 + ... + 6620384.

It is an arithmetic number, because the mean of its divisors is an integer number (13240764).

Almost surely, 2^39722289 is an apocalyptic number.

It is an amenable number.

39722289 is a deficient number, since it is larger than the sum of its proper divisors (13240767).

39722289 is a wasteful number, since it uses less digits than its factorization.

39722289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13240766.

The product of its digits is 108864, while the sum is 42.

The square root of 39722289 is about 6302.5620980677. The cubic root of 39722289 is about 341.2018853657.

The spelling of 39722289 in words is "thirty-nine million, seven hundred twenty-two thousand, two hundred eighty-nine".