10409591 has 4 divisors (see below), whose sum is σ = 10416792. Its totient is φ = 10402392.

The previous prime is 10409573. The next prime is 10409621. The reversal of 10409591 is 19590401.

10409591 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10409591 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 (10409551) 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, 596 + ... + 4601.

It is an arithmetic number, because the mean of its divisors is an integer number (2604198).

Almost surely, 2^10409591 is an apocalyptic number.

10409591 is a deficient number, since it is larger than the sum of its proper divisors (7201).

10409591 is an equidigital number, since it uses as much as digits as its factorization.

10409591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7200.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 10409591 is about 3226.3897780646. The cubic root of 10409591 is about 218.3456556701.

Adding to 10409591 its reverse (19590401), we get a palindrome (29999992).

The spelling of 10409591 in words is "ten million, four hundred nine thousand, five hundred ninety-one".