449790 has 64 divisors (see below), whose sum is σ = 1244160. Its totient is φ = 103040.

The previous prime is 449783. The next prime is 449797. The reversal of 449790 is 97944.

It is an interprime number because it is at equal distance from previous prime (449783) and next prime (449797).

It is a super-2 number, since 2×449790² = 404622088200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 449790.

It is not an unprimeable number, because it can be changed into a prime (449797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9547 + ... + 9593.

It is an arithmetic number, because the mean of its divisors is an integer number (19440).

2⁴⁴⁹⁷⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622080).

449790 is an abundant number, since it is smaller than the sum of its proper divisors (794370).

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

449790 is a wasteful number, since it uses less digits than its factorization.

449790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 449790 is about 670.6638502260. The cubic root of 449790 is about 76.6190210156.

It can be divided in two parts, 4 and 49790, that added together give a palindrome (49794).

The spelling of 449790 in words is "four hundred forty-nine thousand, seven hundred ninety".