39222287 has 4 divisors (see below), whose sum is σ = 42239400. Its totient is φ = 36205176.

The previous prime is 39222277. The next prime is 39222307. The reversal of 39222287 is 78222293.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39222287 - 2⁸ = 39222031 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 (39222217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508537 + ... + 1508562.

It is an arithmetic number, because the mean of its divisors is an integer number (10559850).

Almost surely, 2^39222287 is an apocalyptic number.

39222287 is a deficient number, since it is larger than the sum of its proper divisors (3017113).

39222287 is a wasteful number, since it uses less digits than its factorization.

39222287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017112.

The product of its digits is 24192, while the sum is 35.

The square root of 39222287 is about 6262.7699143430. The cubic root of 39222287 is about 339.7642165727.

The spelling of 39222287 in words is "thirty-nine million, two hundred twenty-two thousand, two hundred eighty-seven".