4551449390 has 32 divisors (see below), whose sum is σ = 8341371360. Its totient is φ = 1787595264.

The previous prime is 4551449381. The next prime is 4551449393. The reversal of 4551449390 is 939441554.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4551449393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548714 + ... + 556946.

It is an arithmetic number, because the mean of its divisors is an integer number (260667855).

Almost surely, 2^4551449390 is an apocalyptic number.

4551449390 is a deficient number, since it is larger than the sum of its proper divisors (3789921970).

4551449390 is a wasteful number, since it uses less digits than its factorization.

4551449390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 4551449390 is about 67464.4305541817. The cubic root of 4551449390 is about 1657.2317278545.

The spelling of 4551449390 in words is "four billion, five hundred fifty-one million, four hundred forty-nine thousand, three hundred ninety".