89923679 has 2 divisors, whose sum is σ = 89923680. Its totient is φ = 89923678.

The previous prime is 89923667. The next prime is 89923681. The reversal of 89923679 is 97632998.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89923679 - 2¹⁶ = 89858143 is a prime.

It is a Sophie Germain prime.

Together with 89923681, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89923679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89925679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44961839 + 44961840.

It is an arithmetic number, because the mean of its divisors is an integer number (44961840).

Almost surely, 2^89923679 is an apocalyptic number.

89923679 is a deficient number, since it is larger than the sum of its proper divisors (1).

89923679 is an equidigital number, since it uses as much as digits as its factorization.

89923679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 53.

The square root of 89923679 is about 9482.8096574802. The cubic root of 89923679 is about 448.0137627973.

The spelling of 89923679 in words is "eighty-nine million, nine hundred twenty-three thousand, six hundred seventy-nine".