89940679 has 2 divisors, whose sum is σ = 89940680. Its totient is φ = 89940678.

The previous prime is 89940677. The next prime is 89940701. The reversal of 89940679 is 97604998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89940679 - 2¹ = 89940677 is a prime.

Together with 89940677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89940677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44970339 + 44970340.

It is an arithmetic number, because the mean of its divisors is an integer number (44970340).

Almost surely, 2^89940679 is an apocalyptic number.

89940679 is a deficient number, since it is larger than the sum of its proper divisors (1).

89940679 is an equidigital number, since it uses as much as digits as its factorization.

89940679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 89940679 is about 9483.7059739323. The cubic root of 89940679 is about 448.0419932336.

The spelling of 89940679 in words is "eighty-nine million, nine hundred forty thousand, six hundred seventy-nine".