4449889990 has 48 divisors (see below), whose sum is σ = 9912410208. Its totient is φ = 1408313088.

The previous prime is 4449889967. The next prime is 4449889991. The reversal of 4449889990 is 999889444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4449889991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176247 + ... + 199906.

It is an arithmetic number, because the mean of its divisors is an integer number (206508546).

Almost surely, 2^4449889990 is an apocalyptic number.

4449889990 is an abundant number, since it is smaller than the sum of its proper divisors (5462520218).

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

4449889990 is a wasteful number, since it uses less digits than its factorization.

4449889990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376193 (or 376180 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 64.

The square root of 4449889990 is about 66707.4957557245. The cubic root of 4449889990 is about 1644.8126023349.

The spelling of 4449889990 in words is "four billion, four hundred forty-nine million, eight hundred eighty-nine thousand, nine hundred ninety".