38889894434 has 8 divisors (see below), whose sum is σ = 58990289580. Its totient is φ = 19226464576.

The previous prime is 38889894401. The next prime is 38889894437. The reversal of 38889894434 is 43449898883.

It can be written as a sum of positive squares in 2 ways, for example, as 38692070209 + 197824225 = 196703^2 + 14065^2 .

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

It is not an unprimeable number, because it can be changed into a prime (38889894437) 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, 109241099 + ... + 109241454.

Almost surely, 2^38889894434 is an apocalyptic number.

38889894434 is a deficient number, since it is larger than the sum of its proper divisors (20100395146).

38889894434 is a wasteful number, since it uses less digits than its factorization.

38889894434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218482644.

The product of its digits is 191102976, while the sum is 68.

The spelling of 38889894434 in words is "thirty-eight billion, eight hundred eighty-nine million, eight hundred ninety-four thousand, four hundred thirty-four".