6428339144 has 8 divisors (see below), whose sum is σ = 12053135910. Its totient is φ = 3214169568.

The previous prime is 6428339117. The next prime is 6428339153. The reversal of 6428339144 is 4419338246.

It can be written as a sum of positive squares in only one way, i.e., 4158960100 + 2269379044 = 64490^2 + 47638^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 6428339095 and 6428339104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401771189 + ... + 401771204.

Almost surely, 2^6428339144 is an apocalyptic number.

It is an amenable number.

6428339144 is a deficient number, since it is larger than the sum of its proper divisors (5624796766).

6428339144 is a wasteful number, since it uses less digits than its factorization.

6428339144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803542399 (or 803542395 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 6428339144 is about 80176.9240118377. The cubic root of 6428339144 is about 1859.3718871926.

The spelling of 6428339144 in words is "six billion, four hundred twenty-eight million, three hundred thirty-nine thousand, one hundred forty-four".