89844649 has 2 divisors, whose sum is σ = 89844650. Its totient is φ = 89844648.

The previous prime is 89844637. The next prime is 89844659. The reversal of 89844649 is 94644898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69305625 + 20539024 = 8325^2 + 4532^2 .

It is a cyclic number.

It is not a de Polignac number, because 89844649 - 2¹³ = 89836457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89844596 and 89844605.

It is not a weakly prime, because it can be changed into another prime (89844619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44922324 + 44922325.

It is an arithmetic number, because the mean of its divisors is an integer number (44922325).

Almost surely, 2^89844649 is an apocalyptic number.

It is an amenable number.

89844649 is a deficient number, since it is larger than the sum of its proper divisors (1).

89844649 is an equidigital number, since it uses as much as digits as its factorization.

89844649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 52.

The square root of 89844649 is about 9478.6417275895. The cubic root of 89844649 is about 447.8824777433.

The spelling of 89844649 in words is "eighty-nine million, eight hundred forty-four thousand, six hundred forty-nine".