22461389 has 2 divisors, whose sum is σ = 22461390. Its totient is φ = 22461388.

The previous prime is 22461371. The next prime is 22461407. The reversal of 22461389 is 98316422.

It is a balanced prime because it is at equal distance from previous prime (22461371) and next prime (22461407).

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 2301289 = 4490^2 + 1517^2 .

It is a cyclic number.

It is not a de Polignac number, because 22461389 - 2¹² = 22457293 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22464389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11230694 + 11230695.

It is an arithmetic number, because the mean of its divisors is an integer number (11230695).

Almost surely, 2^22461389 is an apocalyptic number.

It is an amenable number.

22461389 is a deficient number, since it is larger than the sum of its proper divisors (1).

22461389 is an equidigital number, since it uses as much as digits as its factorization.

22461389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 22461389 is about 4739.3447859382. The cubic root of 22461389 is about 282.1492302388.

The spelling of 22461389 in words is "twenty-two million, four hundred sixty-one thousand, three hundred eighty-nine".