89700997 has 4 divisors (see below), whose sum is σ = 89857036. Its totient is φ = 89544960.

The previous prime is 89700991. The next prime is 89701021. The reversal of 89700997 is 79900798.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79900798 = 2 ⋅39950399.

It can be written as a sum of positive squares in 2 ways, for example, as 89132481 + 568516 = 9441^2 + 754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89700997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89700997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89700991) 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 in 3 ways as a sum of consecutive naturals, for example, 77154 + ... + 78307.

It is an arithmetic number, because the mean of its divisors is an integer number (22464259).

Almost surely, 2^89700997 is an apocalyptic number.

It is an amenable number.

89700997 is a deficient number, since it is larger than the sum of its proper divisors (156039).

89700997 is a wasteful number, since it uses less digits than its factorization.

89700997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156038.

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 89700997 is about 9471.0610282059. The cubic root of 89700997 is about 447.6436449899.

The spelling of 89700997 in words is "eighty-nine million, seven hundred thousand, nine hundred ninety-seven".