449611990 has 8 divisors (see below), whose sum is σ = 809301600. Its totient is φ = 179844792.

The previous prime is 449611951. The next prime is 449611993. The reversal of 449611990 is 99116944.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449611993) 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, 22480590 + ... + 22480609.

It is an arithmetic number, because the mean of its divisors is an integer number (101162700).

Almost surely, 2^449611990 is an apocalyptic number.

449611990 is a deficient number, since it is larger than the sum of its proper divisors (359689610).

449611990 is a wasteful number, since it uses less digits than its factorization.

449611990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44961206.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 449611990 is about 21204.0559799299. The cubic root of 449611990 is about 766.0891203769.

The spelling of 449611990 in words is "four hundred forty-nine million, six hundred eleven thousand, nine hundred ninety".