5639894234 has 16 divisors (see below), whose sum is σ = 9116779560. Its totient is φ = 2601262080.

The previous prime is 5639894213. The next prime is 5639894261. The reversal of 5639894234 is 4324989365.

It can be written as a sum of positive squares in 4 ways, for example, as 1257057025 + 4382837209 = 35455^2 + 66203^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34127 + ... + 111554.

Almost surely, 2^5639894234 is an apocalyptic number.

5639894234 is a deficient number, since it is larger than the sum of its proper divisors (3476885326).

5639894234 is a wasteful number, since it uses less digits than its factorization.

5639894234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147185.

The product of its digits is 5598720, while the sum is 53.

The square root of 5639894234 is about 75099.2292503725. The cubic root of 5639894234 is about 1780.0149636835.

The spelling of 5639894234 in words is "five billion, six hundred thirty-nine million, eight hundred ninety-four thousand, two hundred thirty-four".