11621439 has 6 divisors (see below), whose sum is σ = 16786536. Its totient is φ = 7747620.

The previous prime is 11621437. The next prime is 11621443. The reversal of 11621439 is 93412611.

11621439 is a `hidden beast` number, since 1 + 1 + 621 + 4 + 39 = 666.

It is not a de Polignac number, because 11621439 - 2¹ = 11621437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621437) 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 5 ways as a sum of consecutive naturals, for example, 645627 + ... + 645644.

It is an arithmetic number, because the mean of its divisors is an integer number (2797756).

Almost surely, 2^11621439 is an apocalyptic number.

11621439 is a deficient number, since it is larger than the sum of its proper divisors (5165097).

11621439 is a wasteful number, since it uses less digits than its factorization.

11621439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291277 (or 1291274 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 11621439 is about 3409.0231738725. The cubic root of 11621439 is about 226.5096117436.

It can be divided in two parts, 1162 and 1439, that added together give a square (2601 = 51²).

The spelling of 11621439 in words is "eleven million, six hundred twenty-one thousand, four hundred thirty-nine".