14091021 has 12 divisors (see below), whose sum is σ = 23261472. Its totient is φ = 8051976.

The previous prime is 14090983. The next prime is 14091037. The reversal of 14091021 is 12019041.

It is not a de Polignac number, because 14091021 - 2⁷ = 14090893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14090985 and 14091003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14091041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111771 + ... + 111896.

It is an arithmetic number, because the mean of its divisors is an integer number (1938456).

Almost surely, 2^14091021 is an apocalyptic number.

It is an amenable number.

14091021 is a deficient number, since it is larger than the sum of its proper divisors (9170451).

14091021 is a wasteful number, since it uses less digits than its factorization.

14091021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223680 (or 223677 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 14091021 is about 3753.8008737811. The cubic root of 14091021 is about 241.5354165360.

The spelling of 14091021 in words is "fourteen million, ninety-one thousand, twenty-one".