11459821 has 2 divisors, whose sum is σ = 11459822. Its totient is φ = 11459820.

The previous prime is 11459803. The next prime is 11459837. The reversal of 11459821 is 12895411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10989225 + 470596 = 3315^2 + 686^2 .

It is a cyclic number.

It is not a de Polignac number, because 11459821 - 2²¹ = 9362669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11459891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5729910 + 5729911.

It is an arithmetic number, because the mean of its divisors is an integer number (5729911).

Almost surely, 2^11459821 is an apocalyptic number.

It is an amenable number.

11459821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11459821 is an equidigital number, since it uses as much as digits as its factorization.

11459821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 31.

The square root of 11459821 is about 3385.2357377294. The cubic root of 11459821 is about 225.4546920377.

The spelling of 11459821 in words is "eleven million, four hundred fifty-nine thousand, eight hundred twenty-one".