449129380 has 48 divisors (see below), whose sum is σ = 1115089920. Its totient is φ = 148675968.

The previous prime is 449129371. The next prime is 449129381. The reversal of 449129380 is 83921944.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (449129381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51252 + ... + 59371.

It is an arithmetic number, because the mean of its divisors is an integer number (23231040).

Almost surely, 2^449129380 is an apocalyptic number.

It is an amenable number.

449129380 is an abundant number, since it is smaller than the sum of its proper divisors (665960540).

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

449129380 is a wasteful number, since it uses less digits than its factorization.

449129380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110668 (or 110666 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 449129380 is about 21192.6727903773. The cubic root of 449129380 is about 765.8149175507.

The spelling of 449129380 in words is "four hundred forty-nine million, one hundred twenty-nine thousand, three hundred eighty".