449867421 has 6 divisors (see below), whose sum is σ = 649808510. Its totient is φ = 299911608.

The previous prime is 449867417. The next prime is 449867441. The reversal of 449867421 is 124768944.

It can be written as a sum of positive squares in only one way, i.e., 249956100 + 199911321 = 15810^2 + 14139^2 .

It is not a de Polignac number, because 449867421 - 2² = 449867417 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 (449867441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24992626 + ... + 24992643.

Almost surely, 2^449867421 is an apocalyptic number.

It is an amenable number.

449867421 is a deficient number, since it is larger than the sum of its proper divisors (199941089).

449867421 is a wasteful number, since it uses less digits than its factorization.

449867421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49985275 (or 49985272 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 449867421 is about 21210.0782883987. The cubic root of 449867421 is about 766.2341683066.

The spelling of 449867421 in words is "four hundred forty-nine million, eight hundred sixty-seven thousand, four hundred twenty-one".