89860997 has 4 divisors (see below), whose sum is σ = 95146956. Its totient is φ = 84575040.

The previous prime is 89860987. The next prime is 89861021. The reversal of 89860997 is 79906898.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79906898 = 2 ⋅39953449.

It can be written as a sum of positive squares in 2 ways, for example, as 60202081 + 29658916 = 7759^2 + 5446^2 .

It is a cyclic number.

It is not a de Polignac number, because 89860997 - 2⁶ = 89860933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89860957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2642954 + ... + 2642987.

It is an arithmetic number, because the mean of its divisors is an integer number (23786739).

Almost surely, 2^89860997 is an apocalyptic number.

It is an amenable number.

89860997 is a deficient number, since it is larger than the sum of its proper divisors (5285959).

89860997 is a wasteful number, since it uses less digits than its factorization.

89860997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285958.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The square root of 89860997 is about 9479.5040482084. The cubic root of 89860997 is about 447.9096414412.

The spelling of 89860997 in words is "eighty-nine million, eight hundred sixty thousand, nine hundred ninety-seven".