448129623 has 4 divisors (see below), whose sum is σ = 597506168. Its totient is φ = 298753080.

The previous prime is 448129613. The next prime is 448129657. The reversal of 448129623 is 326921844.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 448129623 - 2⁶ = 448129559 is a prime.

It is a super-4 number, since 4×448129623⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448129613) 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, 74688268 + ... + 74688273.

It is an arithmetic number, because the mean of its divisors is an integer number (149376542).

Almost surely, 2^448129623 is an apocalyptic number.

448129623 is a deficient number, since it is larger than the sum of its proper divisors (149376545).

448129623 is a wasteful number, since it uses less digits than its factorization.

448129623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149376544.

The product of its digits is 82944, while the sum is 39.

The square root of 448129623 is about 21169.0723226125. The cubic root of 448129623 is about 765.2462635756.

The spelling of 448129623 in words is "four hundred forty-eight million, one hundred twenty-nine thousand, six hundred twenty-three".