449158893779 has 4 divisors (see below), whose sum is σ = 449472334776. Its totient is φ = 448845452784.

The previous prime is 449158893769. The next prime is 449158893847. The reversal of 449158893779 is 977398851944.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 449158893779 - 2²⁰ = 449157845203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449158893739) 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, 156718349 + ... + 156721214.

It is an arithmetic number, because the mean of its divisors is an integer number (112368083694).

Almost surely, 2^449158893779 is an apocalyptic number.

449158893779 is a deficient number, since it is larger than the sum of its proper divisors (313440997).

449158893779 is a wasteful number, since it uses less digits than its factorization.

449158893779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313440996.

The product of its digits is 548674560, while the sum is 74.

The spelling of 449158893779 in words is "four hundred forty-nine billion, one hundred fifty-eight million, eight hundred ninety-three thousand, seven hundred seventy-nine".