453221639 has 4 divisors (see below), whose sum is σ = 488084856. Its totient is φ = 418358424.

The previous prime is 453221627. The next prime is 453221653. The reversal of 453221639 is 936122354.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936122354 = 2 ⋅468061177.

It is a cyclic number.

It is not a de Polignac number, because 453221639 - 2⁴ = 453221623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 453221599 and 453221608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453221689) 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, 17431589 + ... + 17431614.

It is an arithmetic number, because the mean of its divisors is an integer number (122021214).

Almost surely, 2^453221639 is an apocalyptic number.

453221639 is a deficient number, since it is larger than the sum of its proper divisors (34863217).

453221639 is a wasteful number, since it uses less digits than its factorization.

453221639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34863216.

The product of its digits is 38880, while the sum is 35.

The square root of 453221639 is about 21289.0027713841. The cubic root of 453221639 is about 768.1338058736.

The spelling of 453221639 in words is "four hundred fifty-three million, two hundred twenty-one thousand, six hundred thirty-nine".