985972801 has 4 divisors (see below), whose sum is σ = 1075606704. Its totient is φ = 896338900.

The previous prime is 985972789. The next prime is 985972831. The reversal of 985972801 is 108279589.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 108279589 = 11 ⋅9843599.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985972801 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985972831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44816935 + ... + 44816956.

It is an arithmetic number, because the mean of its divisors is an integer number (268901676).

Almost surely, 2^985972801 is an apocalyptic number.

It is an amenable number.

985972801 is a deficient number, since it is larger than the sum of its proper divisors (89633903).

985972801 is a wasteful number, since it uses less digits than its factorization.

985972801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89633902.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 985972801 is about 31400.2038369180. The cubic root of 985972801 is about 995.3022325393.

The spelling of 985972801 in words is "nine hundred eighty-five million, nine hundred seventy-two thousand, eight hundred one".