449465881 has 4 divisors (see below), whose sum is σ = 473122000. Its totient is φ = 425809764.

The previous prime is 449465879. The next prime is 449465911. The reversal of 449465881 is 188564944.

It is a happy number.

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 449465881 - 2¹ = 449465879 is a prime.

It is a super-2 number, since 2×449465881² = 404039156366212322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449465831) 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, 11828031 + ... + 11828068.

It is an arithmetic number, because the mean of its divisors is an integer number (118280500).

Almost surely, 2^449465881 is an apocalyptic number.

It is an amenable number.

449465881 is a deficient number, since it is larger than the sum of its proper divisors (23656119).

449465881 is a wasteful number, since it uses less digits than its factorization.

449465881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23656118.

The product of its digits is 1105920, while the sum is 49.

The square root of 449465881 is about 21200.6103921562. The cubic root of 449465881 is about 766.0061268589.

The spelling of 449465881 in words is "four hundred forty-nine million, four hundred sixty-five thousand, eight hundred eighty-one".