10899409 has 2 divisors, whose sum is σ = 10899410. Its totient is φ = 10899408.

The previous prime is 10899403. The next prime is 10899437. The reversal of 10899409 is 90499801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10890000 + 9409 = 3300^2 + 97^2 .

It is a cyclic number.

It is not a de Polignac number, because 10899409 - 2¹³ = 10891217 is a prime.

It is not a weakly prime, because it can be changed into another prime (10899403) 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 as a sum of consecutive naturals, namely, 5449704 + 5449705.

It is an arithmetic number, because the mean of its divisors is an integer number (5449705).

Almost surely, 2^10899409 is an apocalyptic number.

It is an amenable number.

10899409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10899409 is an equidigital number, since it uses as much as digits as its factorization.

10899409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 10899409 is about 3301.4252982613. The cubic root of 10899409 is about 221.7180157546.

It can be divided in two parts, 1089 and 9409, that multiplied together give a square (10246401 = 3201²).

The spelling of 10899409 in words is "ten million, eight hundred ninety-nine thousand, four hundred nine".