11639469 has 16 divisors (see below), whose sum is σ = 16142400. Its totient is φ = 7451136.

The previous prime is 11639437. The next prime is 11639479. The reversal of 11639469 is 96493611.

It is not a de Polignac number, because 11639469 - 2⁵ = 11639437 is a prime.

It is a super-2 number, since 2×11639469² = 270954477203922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11639429) 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 15 ways as a sum of consecutive naturals, for example, 30522 + ... + 30900.

It is an arithmetic number, because the mean of its divisors is an integer number (1008900).

Almost surely, 2^11639469 is an apocalyptic number.

It is an amenable number.

11639469 is a deficient number, since it is larger than the sum of its proper divisors (4502931).

11639469 is a wasteful number, since it uses less digits than its factorization.

11639469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its digits is 34992, while the sum is 39.

The square root of 11639469 is about 3411.6666015307. Note that the first 4 decimals coincide. The cubic root of 11639469 is about 226.6266901336.

The spelling of 11639469 in words is "eleven million, six hundred thirty-nine thousand, four hundred sixty-nine".