89475839 has 2 divisors, whose sum is σ = 89475840. Its totient is φ = 89475838.

The previous prime is 89475821. The next prime is 89475847. The reversal of 89475839 is 93857498.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89475839 - 2¹⁶ = 89410303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89475809) 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, 44737919 + 44737920.

It is an arithmetic number, because the mean of its divisors is an integer number (44737920).

Almost surely, 2^89475839 is an apocalyptic number.

89475839 is a deficient number, since it is larger than the sum of its proper divisors (1).

89475839 is an equidigital number, since it uses as much as digits as its factorization.

89475839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 53.

The square root of 89475839 is about 9459.1669294923. The cubic root of 89475839 is about 447.2687885214.

The spelling of 89475839 in words is "eighty-nine million, four hundred seventy-five thousand, eight hundred thirty-nine".