22447939 has 8 divisors (see below), whose sum is σ = 24159168. Its totient is φ = 20780160.

The previous prime is 22447933. The next prime is 22447967. The reversal of 22447939 is 93974422.

22447939 = T₃₈₆₇ + T₃₈₆₈ + T₃₈₆₉.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22447939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22447933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9787 + ... + 11860.

It is an arithmetic number, because the mean of its divisors is an integer number (3019896).

Almost surely, 2^22447939 is an apocalyptic number.

22447939 is the 3869-th centered triangular number.

22447939 is a deficient number, since it is larger than the sum of its proper divisors (1711229).

22447939 is a wasteful number, since it uses less digits than its factorization.

22447939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21725.

The product of its digits is 108864, while the sum is 40.

The square root of 22447939 is about 4737.9256009355. The cubic root of 22447939 is about 282.0929015041.

The spelling of 22447939 in words is "twenty-two million, four hundred forty-seven thousand, nine hundred thirty-nine".