449377840 has 40 divisors (see below), whose sum is σ = 1047307968. Its totient is φ = 179320320.

The previous prime is 449377783. The next prime is 449377849. The reversal of 449377840 is 48773944.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (449377849) 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, 27964 + ... + 40996.

Almost surely, 2^449377840 is an apocalyptic number.

449377840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

449377840 is an abundant number, since it is smaller than the sum of its proper divisors (597930128).

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

449377840 is a wasteful number, since it uses less digits than its factorization.

449377840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13477 (or 13471 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 449377840 is about 21198.5339115704. The cubic root of 449377840 is about 765.9561087136.

The spelling of 449377840 in words is "four hundred forty-nine million, three hundred seventy-seven thousand, eight hundred forty".