450869389449 has 4 divisors (see below), whose sum is σ = 601159185936. Its totient is φ = 300579592964.

The previous prime is 450869389423. The next prime is 450869389463. The reversal of 450869389449 is 944983968054.

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 450869389449 - 2¹⁵ = 450869356681 is a prime.

It is a super-2 number, since 2×450869389449² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (450869389469) 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, 75144898239 + ... + 75144898244.

It is an arithmetic number, because the mean of its divisors is an integer number (150289796484).

Almost surely, 2^450869389449 is an apocalyptic number.

It is an amenable number.

450869389449 is a deficient number, since it is larger than the sum of its proper divisors (150289796487).

450869389449 is a wasteful number, since it uses less digits than its factorization.

450869389449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150289796486.

The product of its (nonzero) digits is 268738560, while the sum is 69.

The spelling of 450869389449 in words is "four hundred fifty billion, eight hundred sixty-nine million, three hundred eighty-nine thousand, four hundred forty-nine".