4450256644 has 12 divisors (see below), whose sum is σ = 7835729104. Its totient is φ = 2211476904.

The previous prime is 4450256633. The next prime is 4450256653. The reversal of 4450256644 is 4466520544.

It is a happy number.

It is a super-2 number, since 2×4450256644² = 39609568394932285472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4450256597 and 4450256606.

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, 3412122 + ... + 3413425.

Almost surely, 2^4450256644 is an apocalyptic number.

It is an amenable number.

4450256644 is a deficient number, since it is larger than the sum of its proper divisors (3385472460).

4450256644 is a wasteful number, since it uses less digits than its factorization.

4450256644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825714 (or 6825712 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

The square root of 4450256644 is about 66710.2439210051. The cubic root of 4450256644 is about 1644.8577765271.

The spelling of 4450256644 in words is "four billion, four hundred fifty million, two hundred fifty-six thousand, six hundred forty-four".