89691079 has 2 divisors, whose sum is σ = 89691080. Its totient is φ = 89691078.

The previous prime is 89691059. The next prime is 89691101. The reversal of 89691079 is 97019698.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89691079 - 2⁹ = 89690567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89691059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44845539 + 44845540.

It is an arithmetic number, because the mean of its divisors is an integer number (44845540).

Almost surely, 2^89691079 is an apocalyptic number.

89691079 is a deficient number, since it is larger than the sum of its proper divisors (1).

89691079 is an equidigital number, since it uses as much as digits as its factorization.

89691079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 89691079 is about 9470.5374187530. The cubic root of 89691079 is about 447.6271461272.

The spelling of 89691079 in words is "eighty-nine million, six hundred ninety-one thousand, seventy-nine".