11653409 has 4 divisors (see below), whose sum is σ = 11968404. Its totient is φ = 11338416.

The previous prime is 11653399. The next prime is 11653417. The reversal of 11653409 is 90435611.

11653409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5626384 + 6027025 = 2372^2 + 2455^2 .

It is a cyclic number.

It is not a de Polignac number, because 11653409 - 2⁸ = 11653153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11653429) 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, 157442 + ... + 157515.

It is an arithmetic number, because the mean of its divisors is an integer number (2992101).

Almost surely, 2^11653409 is an apocalyptic number.

It is an amenable number.

11653409 is a deficient number, since it is larger than the sum of its proper divisors (314995).

11653409 is an equidigital number, since it uses as much as digits as its factorization.

11653409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314994.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 11653409 is about 3413.7089799806. The cubic root of 11653409 is about 226.7171271259.

The spelling of 11653409 in words is "eleven million, six hundred fifty-three thousand, four hundred nine".