4450623421 has 4 divisors (see below), whose sum is σ = 4452429952. Its totient is φ = 4448816892.

The previous prime is 4450623391. The next prime is 4450623493. The reversal of 4450623421 is 1243260544.

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 not a de Polignac number, because 4450623421 - 2⁷ = 4450623293 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 (4450623521) 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, 899565 + ... + 904498.

It is an arithmetic number, because the mean of its divisors is an integer number (1113107488).

Almost surely, 2^4450623421 is an apocalyptic number.

It is an amenable number.

4450623421 is a deficient number, since it is larger than the sum of its proper divisors (1806531).

4450623421 is a wasteful number, since it uses less digits than its factorization.

4450623421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806530.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 4450623421 is about 66712.9928949376. The cubic root of 4450623421 is about 1644.9029633913.

Adding to 4450623421 its reverse (1243260544), we get a palindrome (5693883965).

The spelling of 4450623421 in words is "four billion, four hundred fifty million, six hundred twenty-three thousand, four hundred twenty-one".