4457421608 has 8 divisors (see below), whose sum is σ = 8357665530. Its totient is φ = 2228710800.

The previous prime is 4457421547. The next prime is 4457421611. The reversal of 4457421608 is 8061247544.

It can be written as a sum of positive squares in only one way, i.e., 2528279524 + 1929142084 = 50282^2 + 43922^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278588843 + ... + 278588858.

Almost surely, 2^4457421608 is an apocalyptic number.

It is an amenable number.

4457421608 is a deficient number, since it is larger than the sum of its proper divisors (3900243922).

4457421608 is a wasteful number, since it uses less digits than its factorization.

4457421608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557177707 (or 557177703 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 4457421608 is about 66763.9244502598. The cubic root of 4457421608 is about 1645.7400498055.

The spelling of 4457421608 in words is "four billion, four hundred fifty-seven million, four hundred twenty-one thousand, six hundred eight".