11409639 has 8 divisors (see below), whose sum is σ = 15298560. Its totient is φ = 7563576.

The previous prime is 11409637. The next prime is 11409647. The reversal of 11409639 is 93690411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11409639 - 2¹ = 11409637 is a prime.

It is a super-2 number, since 2×11409639² = 260359724220642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11409637) 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 in 7 ways as a sum of consecutive naturals, for example, 10087 + ... + 11160.

It is an arithmetic number, because the mean of its divisors is an integer number (1912320).

Almost surely, 2^11409639 is an apocalyptic number.

11409639 is a deficient number, since it is larger than the sum of its proper divisors (3888921).

11409639 is a wasteful number, since it uses less digits than its factorization.

11409639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21429.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 11409639 is about 3377.8157143337. The cubic root of 11409639 is about 225.1251254649.

The spelling of 11409639 in words is "eleven million, four hundred nine thousand, six hundred thirty-nine".