4639420444 has 12 divisors (see below), whose sum is σ = 8380888768. Its totient is φ = 2244880800.

The previous prime is 4639420403. The next prime is 4639420463. The reversal of 4639420444 is 4440249364.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4639420397 and 4639420406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18707217 + ... + 18707464.

Almost surely, 2^4639420444 is an apocalyptic number.

It is an amenable number.

4639420444 is a deficient number, since it is larger than the sum of its proper divisors (3741468324).

4639420444 is a wasteful number, since it uses less digits than its factorization.

4639420444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37414716 (or 37414714 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The square root of 4639420444 is about 68113.2912433396. The cubic root of 4639420444 is about 1667.8407371320.

The spelling of 4639420444 in words is "four billion, six hundred thirty-nine million, four hundred twenty thousand, four hundred forty-four".