449271557 has 4 divisors (see below), whose sum is σ = 513453216. Its totient is φ = 385089900.

The previous prime is 449271553. The next prime is 449271569. The reversal of 449271557 is 755172944.

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 449271557 - 2² = 449271553 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 (449271553) 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, 32090819 + ... + 32090832.

It is an arithmetic number, because the mean of its divisors is an integer number (128363304).

Almost surely, 2^449271557 is an apocalyptic number.

It is an amenable number.

449271557 is a deficient number, since it is larger than the sum of its proper divisors (64181659).

449271557 is an equidigital number, since it uses as much as digits as its factorization.

449271557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64181658.

The product of its digits is 352800, while the sum is 44.

The square root of 449271557 is about 21196.0269154387. The cubic root of 449271557 is about 765.8957181583.

The spelling of 449271557 in words is "four hundred forty-nine million, two hundred seventy-one thousand, five hundred fifty-seven".