11621943 has 6 divisors (see below), whose sum is σ = 16787264. Its totient is φ = 7747956.

The previous prime is 11621941. The next prime is 11621957. The reversal of 11621943 is 34912611.

11621943 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11621943 - 2¹ = 11621941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621941) 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, 645655 + ... + 645672.

Almost surely, 2^11621943 is an apocalyptic number.

11621943 is a deficient number, since it is larger than the sum of its proper divisors (5165321).

11621943 is a wasteful number, since it uses less digits than its factorization.

11621943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291333 (or 1291330 counting only the distinct ones).

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

The square root of 11621943 is about 3409.0970945398. The cubic root of 11621943 is about 226.5128861286.

The spelling of 11621943 in words is "eleven million, six hundred twenty-one thousand, nine hundred forty-three".