11421967 has 2 divisors, whose sum is σ = 11421968. Its totient is φ = 11421966.

The previous prime is 11421953. The next prime is 11421973. The reversal of 11421967 is 76912411.

11421967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11421967 is a prime.

It is a super-2 number, since 2×11421967² = 260922660298178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11421947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710983 + 5710984.

It is an arithmetic number, because the mean of its divisors is an integer number (5710984).

Almost surely, 2^11421967 is an apocalyptic number.

11421967 is a deficient number, since it is larger than the sum of its proper divisors (1).

11421967 is an equidigital number, since it uses as much as digits as its factorization.

11421967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 31.

The square root of 11421967 is about 3379.6400695932. The cubic root of 11421967 is about 225.2061780898.

The spelling of 11421967 in words is "eleven million, four hundred twenty-one thousand, nine hundred sixty-seven".