5009661 has 8 divisors (see below), whose sum is σ = 7421760. Its totient is φ = 3339756.

The previous prime is 5009659. The next prime is 5009677. The reversal of 5009661 is 1669005.

It is not a de Polignac number, because 5009661 - 2¹ = 5009659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 185543 = 5009661 / (5 + 0 + 0 + 9 + 6 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5009621) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 92745 + ... + 92798.

It is an arithmetic number, because the mean of its divisors is an integer number (927720).

Almost surely, 2^5009661 is an apocalyptic number.

It is an amenable number.

5009661 is a deficient number, since it is larger than the sum of its proper divisors (2412099).

5009661 is a wasteful number, since it uses less digits than its factorization.

5009661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185552 (or 185546 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 5009661 is about 2238.2272002636. The cubic root of 5009661 is about 171.1076576610.

The spelling of 5009661 in words is "five million, nine thousand, six hundred sixty-one".