8449990 has 8 divisors (see below), whose sum is σ = 15210000. Its totient is φ = 3379992.

The previous prime is 8449979. The next prime is 8449999. The reversal of 8449990 is 999448.

8449990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (8449999) 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, 422490 + ... + 422509.

It is an arithmetic number, because the mean of its divisors is an integer number (1901250).

Almost surely, 2^8449990 is an apocalyptic number.

8449990 is a deficient number, since it is larger than the sum of its proper divisors (6760010).

8449990 is a wasteful number, since it uses less digits than its factorization.

8449990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845006.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 8449990 is about 2906.8866506969. The cubic root of 8449990 is about 203.6817252769.

The spelling of 8449990 in words is "eight million, four hundred forty-nine thousand, nine hundred ninety".