38889442 has 8 divisors (see below), whose sum is σ = 59910876. Its totient is φ = 18919152.

The previous prime is 38889427. The next prime is 38889449. The reversal of 38889442 is 24498883.

38889442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 38081241 + 808201 = 6171^2 + 899^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 38889392 and 38889401.

It is not an unprimeable number, because it can be changed into a prime (38889449) 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, 262693 + ... + 262840.

Almost surely, 2^38889442 is an apocalyptic number.

38889442 is a deficient number, since it is larger than the sum of its proper divisors (21021434).

38889442 is a wasteful number, since it uses less digits than its factorization.

38889442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525572.

The product of its digits is 442368, while the sum is 46.

The square root of 38889442 is about 6236.1399920143. The cubic root of 38889442 is about 338.8003918262.

The spelling of 38889442 in words is "thirty-eight million, eight hundred eighty-nine thousand, four hundred forty-two".