5499990 has 48 divisors (see below), whose sum is σ = 14927328. Its totient is φ = 1402368.

The previous prime is 5499979. The next prime is 5500003. The reversal of 5499990 is 999945.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 742 + ... + 3398.

It is an arithmetic number, because the mean of its divisors is an integer number (310986).

Almost surely, 2^5499990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5499990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7463664).

5499990 is an abundant number, since it is smaller than the sum of its proper divisors (9427338).

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

5499990 is a wasteful number, since it uses less digits than its factorization.

5499990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693 (or 2690 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 5499990 is about 2345.2057479036. The cubic root of 5499990 is about 176.5173097860.

Subtracting from 5499990 its sum of digits (45), we obtain a palindrome (5499945).

The spelling of 5499990 in words is "five million, four hundred ninety-nine thousand, nine hundred ninety".