449431811 has 4 divisors (see below), whose sum is σ = 452294592. Its totient is φ = 446569032.

The previous prime is 449431739. The next prime is 449431823. The reversal of 449431811 is 118134944.

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 449431811 - 2²⁶ = 382322947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449431841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431155 + ... + 1431468.

It is an arithmetic number, because the mean of its divisors is an integer number (113073648).

Almost surely, 2^449431811 is an apocalyptic number.

449431811 is a deficient number, since it is larger than the sum of its proper divisors (2862781).

449431811 is a wasteful number, since it uses less digits than its factorization.

449431811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862780.

The product of its digits is 13824, while the sum is 35.

The square root of 449431811 is about 21199.8068623278. The cubic root of 449431811 is about 765.9867716722.

The spelling of 449431811 in words is "four hundred forty-nine million, four hundred thirty-one thousand, eight hundred eleven".