89947499 has 2 divisors, whose sum is σ = 89947500. Its totient is φ = 89947498.

The previous prime is 89947483. The next prime is 89947513. The reversal of 89947499 is 99474998.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89947499 - 2⁴ = 89947483 is a prime.

It is not a weakly prime, because it can be changed into another prime (89947409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44973749 + 44973750.

It is an arithmetic number, because the mean of its divisors is an integer number (44973750).

Almost surely, 2^89947499 is an apocalyptic number.

89947499 is a deficient number, since it is larger than the sum of its proper divisors (1).

89947499 is an equidigital number, since it uses as much as digits as its factorization.

89947499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 59.

The square root of 89947499 is about 9484.0655311949. The cubic root of 89947499 is about 448.0533176206.

The spelling of 89947499 in words is "eighty-nine million, nine hundred forty-seven thousand, four hundred ninety-nine".