10981409 has 8 divisors (see below), whose sum is σ = 11578368. Its totient is φ = 10399680.

The previous prime is 10981393. The next prime is 10981429. The reversal of 10981409 is 90418901.

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 10981409 - 2⁴ = 10981393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10981429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2312 + ... + 5225.

It is an arithmetic number, because the mean of its divisors is an integer number (1447296).

Almost surely, 2^10981409 is an apocalyptic number.

It is an amenable number.

10981409 is a deficient number, since it is larger than the sum of its proper divisors (596959).

10981409 is an equidigital number, since it uses as much as digits as its factorization.

10981409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7615.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 10981409 is about 3313.8209064462. The cubic root of 10981409 is about 222.2726474551.

It can be divided in two parts, 109 and 81409, that added together give a palindrome (81518).

The spelling of 10981409 in words is "ten million, nine hundred eighty-one thousand, four hundred nine".