11621443 has 2 divisors, whose sum is σ = 11621444. Its totient is φ = 11621442.

The previous prime is 11621437. The next prime is 11621447. The reversal of 11621443 is 34412611.

It is a strong prime.

It is an emirp because it is prime and its reverse (34412611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11621443 is a prime.

It is not a weakly prime, because it can be changed into another prime (11621447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5810721 + 5810722.

It is an arithmetic number, because the mean of its divisors is an integer number (5810722).

Almost surely, 2^11621443 is an apocalyptic number.

11621443 is a deficient number, since it is larger than the sum of its proper divisors (1).

11621443 is an equidigital number, since it uses as much as digits as its factorization.

11621443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 11621443 is about 3409.0237605508. The cubic root of 11621443 is about 226.5096377312.

The spelling of 11621443 in words is "eleven million, six hundred twenty-one thousand, four hundred forty-three".