449348440 has 16 divisors (see below), whose sum is σ = 1011034080. Its totient is φ = 179739360.

The previous prime is 449348429. The next prime is 449348443. The reversal of 449348440 is 44843944.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 11233711 = 449348440 / (4 + 4 + 9 + 3 + 4 + 8 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 449348393 and 449348402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449348443) 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, 5616816 + ... + 5616895.

It is an arithmetic number, because the mean of its divisors is an integer number (63189630).

Almost surely, 2^449348440 is an apocalyptic number.

449348440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

449348440 is an abundant number, since it is smaller than the sum of its proper divisors (561685640).

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

449348440 is a wasteful number, since it uses less digits than its factorization.

449348440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11233722 (or 11233718 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 449348440 is about 21197.8404560465. The cubic root of 449348440 is about 765.9394044329.

The spelling of 449348440 in words is "four hundred forty-nine million, three hundred forty-eight thousand, four hundred forty".