11409409 has 8 divisors (see below), whose sum is σ = 12530880. Its totient is φ = 10302000.

The previous prime is 11409401. The next prime is 11409451. The reversal of 11409409 is 90490411.

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 11409409 - 2³ = 11409401 is a prime.

It is a super-2 number, since 2×11409409² = 260349227458562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11409401) 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, 1774 + ... + 5095.

It is an arithmetic number, because the mean of its divisors is an integer number (1566360).

Almost surely, 2^11409409 is an apocalyptic number.

It is an amenable number.

11409409 is a deficient number, since it is larger than the sum of its proper divisors (1121471).

11409409 is a wasteful number, since it uses less digits than its factorization.

11409409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7031.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 11409409 is about 3377.7816684919. The cubic root of 11409409 is about 225.1236127344.

The spelling of 11409409 in words is "eleven million, four hundred nine thousand, four hundred nine".