449371493 has 4 divisors (see below), whose sum is σ = 468909408. Its totient is φ = 429833580.

The previous prime is 449371487. The next prime is 449371511. The reversal of 449371493 is 394173944.

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 a de Polignac number, because none of the positive numbers 2^k-449371493 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 (449371423) 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, 9768923 + ... + 9768968.

It is an arithmetic number, because the mean of its divisors is an integer number (117227352).

Almost surely, 2^449371493 is an apocalyptic number.

It is an amenable number.

449371493 is a deficient number, since it is larger than the sum of its proper divisors (19537915).

449371493 is a wasteful number, since it uses less digits than its factorization.

449371493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19537914.

The product of its digits is 326592, while the sum is 44.

The square root of 449371493 is about 21198.3842072928. The cubic root of 449371493 is about 765.9525025825.

The spelling of 449371493 in words is "four hundred forty-nine million, three hundred seventy-one thousand, four hundred ninety-three".