10909649 has 4 divisors (see below), whose sum is σ = 11175780. Its totient is φ = 10643520.

The previous prime is 10909643. The next prime is 10909673. The reversal of 10909649 is 94690901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3385600 + 7524049 = 1840^2 + 2743^2 .

It is a cyclic number.

It is not a de Polignac number, because 10909649 - 2¹² = 10905553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10909643) 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, 133004 + ... + 133085.

It is an arithmetic number, because the mean of its divisors is an integer number (2793945).

Almost surely, 2^10909649 is an apocalyptic number.

It is an amenable number.

10909649 is a deficient number, since it is larger than the sum of its proper divisors (266131).

10909649 is an equidigital number, since it uses as much as digits as its factorization.

10909649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266130.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 10909649 is about 3302.9757795055. The cubic root of 10909649 is about 221.7874287488.

The spelling of 10909649 in words is "ten million, nine hundred nine thousand, six hundred forty-nine".