4454663021 has 4 divisors (see below), whose sum is σ = 4469173632. Its totient is φ = 4440152412.

The previous prime is 4454663009. The next prime is 4454663029. The reversal of 4454663021 is 1203664544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4454663021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4454663029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7254845 + ... + 7255458.

It is an arithmetic number, because the mean of its divisors is an integer number (1117293408).

Almost surely, 2^4454663021 is an apocalyptic number.

It is an amenable number.

4454663021 is a deficient number, since it is larger than the sum of its proper divisors (14510611).

4454663021 is a wasteful number, since it uses less digits than its factorization.

4454663021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14510610.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 4454663021 is about 66743.2619895072. The cubic root of 4454663021 is about 1645.4004772622.

The spelling of 4454663021 in words is "four billion, four hundred fifty-four million, six hundred sixty-three thousand, twenty-one".