5409661 has 8 divisors (see below), whose sum is σ = 5752800. Its totient is φ = 5072400.

The previous prime is 5409643. The next prime is 5409671. The reversal of 5409661 is 1669045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5409661 - 2⁵ = 5409629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5409611) 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, 510 + ... + 3328.

It is an arithmetic number, because the mean of its divisors is an integer number (719100).

Almost surely, 2^5409661 is an apocalyptic number.

It is an amenable number.

5409661 is a deficient number, since it is larger than the sum of its proper divisors (343139).

5409661 is a wasteful number, since it uses less digits than its factorization.

5409661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 5409661 is about 2325.8677950391. The cubic root of 5409661 is about 175.5456276469.

It can be divided in two parts, 540 and 9661, that added together give a palindrome (10201).

The spelling of 5409661 in words is "five million, four hundred nine thousand, six hundred sixty-one".