449399238 has 16 divisors (see below), whose sum is σ = 899109120. Its totient is φ = 149747976.

The previous prime is 449399227. The next prime is 449399239. The reversal of 449399238 is 832993944.

It is a super-2 number, since 2×449399238² = 403919350229961288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449399239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8631 + ... + 31197.

It is an arithmetic number, because the mean of its divisors is an integer number (56194320).

Almost surely, 2^449399238 is an apocalyptic number.

449399238 is an abundant number, since it is smaller than the sum of its proper divisors (449709882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449399238 is a wasteful number, since it uses less digits than its factorization.

449399238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25891.

The product of its digits is 1679616, while the sum is 51.

The square root of 449399238 is about 21199.0386102766. The cubic root of 449399238 is about 765.9682660174.

The spelling of 449399238 in words is "four hundred forty-nine million, three hundred ninety-nine thousand, two hundred thirty-eight".