89459861 has 2 divisors, whose sum is σ = 89459862. Its totient is φ = 89459860.

The previous prime is 89459819. The next prime is 89459869. The reversal of 89459861 is 16895498.

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., 68574961 + 20884900 = 8281^2 + 4570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89459861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89459869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44729930 + 44729931.

It is an arithmetic number, because the mean of its divisors is an integer number (44729931).

Almost surely, 2^89459861 is an apocalyptic number.

It is an amenable number.

89459861 is a deficient number, since it is larger than the sum of its proper divisors (1).

89459861 is an equidigital number, since it uses as much as digits as its factorization.

89459861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 50.

The square root of 89459861 is about 9458.3223142373. The cubic root of 89459861 is about 447.2421635083.

The spelling of 89459861 in words is "eighty-nine million, four hundred fifty-nine thousand, eight hundred sixty-one".