89837855797 has 4 divisors (see below), whose sum is σ = 89873102700. Its totient is φ = 89802608896.

The previous prime is 89837855777. The next prime is 89837855839. The reversal of 89837855797 is 79755873898.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84866759761 + 4971096036 = 291319^2 + 70506^2 .

It is a cyclic number.

It is not a de Polignac number, because 89837855797 - 2⁷ = 89837855669 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 (89837855747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17619628 + ... + 17624725.

It is an arithmetic number, because the mean of its divisors is an integer number (22468275675).

Almost surely, 2^89837855797 is an apocalyptic number.

It is an amenable number.

89837855797 is a deficient number, since it is larger than the sum of its proper divisors (35246903).

89837855797 is a wasteful number, since it uses less digits than its factorization.

89837855797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35246902.

The product of its digits is 1066867200, while the sum is 76.

The spelling of 89837855797 in words is "eighty-nine billion, eight hundred thirty-seven million, eight hundred fifty-five thousand, seven hundred ninety-seven".