550416989 has 4 divisors (see below), whose sum is σ = 552448320. Its totient is φ = 548385660.

The previous prime is 550416983. The next prime is 550417003. The reversal of 550416989 is 989614055.

It is a happy number.

550416989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550416989 is a prime.

It is a super-2 number, since 2×550416989² = 605917723559652242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550416983) 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, 1015259 + ... + 1015800.

It is an arithmetic number, because the mean of its divisors is an integer number (138112080).

Almost surely, 2^550416989 is an apocalyptic number.

It is an amenable number.

550416989 is a deficient number, since it is larger than the sum of its proper divisors (2031331).

550416989 is a wasteful number, since it uses less digits than its factorization.

550416989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031330.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 550416989 is about 23460.9673500476. The cubic root of 550416989 is about 819.5282776626.

The spelling of 550416989 in words is "five hundred fifty million, four hundred sixteen thousand, nine hundred eighty-nine".