449991234 has 64 divisors (see below), whose sum is σ = 1246740480. Its totient is φ = 116879760.

The previous prime is 449991211. The next prime is 449991247. The reversal of 449991234 is 432199944.

It is a super-2 number, since 2×449991234² = 404984221353685512, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 449991234.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49954 + ... + 58269.

It is an arithmetic number, because the mean of its divisors is an integer number (19480320).

Almost surely, 2^449991234 is an apocalyptic number.

449991234 is an abundant number, since it is smaller than the sum of its proper divisors (796749246).

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

449991234 is a wasteful number, since it uses less digits than its factorization.

449991234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108252 (or 108246 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 449991234 is about 21212.9968179887. The cubic root of 449991234 is about 766.3044564587.

The spelling of 449991234 in words is "four hundred forty-nine million, nine hundred ninety-one thousand, two hundred thirty-four".