89315749 has 2 divisors, whose sum is σ = 89315750. Its totient is φ = 89315748.

The previous prime is 89315747. The next prime is 89315767. The reversal of 89315749 is 94751398.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74822500 + 14493249 = 8650^2 + 3807^2 .

It is a cyclic number.

It is not a de Polignac number, because 89315749 - 2¹ = 89315747 is a prime.

Together with 89315747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 89315699 and 89315708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89315747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44657874 + 44657875.

It is an arithmetic number, because the mean of its divisors is an integer number (44657875).

Almost surely, 2^89315749 is an apocalyptic number.

It is an amenable number.

89315749 is a deficient number, since it is larger than the sum of its proper divisors (1).

89315749 is an equidigital number, since it uses as much as digits as its factorization.

89315749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 89315749 is about 9450.7009792925. The cubic root of 89315749 is about 447.0018784527.

The spelling of 89315749 in words is "eighty-nine million, three hundred fifteen thousand, seven hundred forty-nine".