89682421 has 2 divisors, whose sum is σ = 89682422. Its totient is φ = 89682420.

The previous prime is 89682403. The next prime is 89682427. The reversal of 89682421 is 12428698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89680900 + 1521 = 9470^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 89682421 - 2⁵ = 89682389 is a prime.

It is equal to p_5199718 and since 89682421 and 5199718 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89682427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44841210 + 44841211.

It is an arithmetic number, because the mean of its divisors is an integer number (44841211).

Almost surely, 2^89682421 is an apocalyptic number.

It is an amenable number.

89682421 is a deficient number, since it is larger than the sum of its proper divisors (1).

89682421 is an equidigital number, since it uses as much as digits as its factorization.

89682421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 89682421 is about 9470.0803058897. The cubic root of 89682421 is about 447.6127423144.

The spelling of 89682421 in words is "eighty-nine million, six hundred eighty-two thousand, four hundred twenty-one".