985897201 has 9 divisors (see below), whose sum is σ = 1047869899. Its totient is φ = 927400864.

The previous prime is 985897183. The next prime is 985897229. The reversal of 985897201 is 102798589.

The square root of 985897201 is 31399.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 767567025 + 218330176 = 27705^2 + 14776^2 .

It is a de Polignac number, because none of the positive numbers 2^k-985897201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985897901) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 532860 + ... + 534706.

Almost surely, 2^985897201 is an apocalyptic number.

985897201 is the 31399-th square number.

985897201 is the 15700-th centered octagonal number.

It is an amenable number.

985897201 is a deficient number, since it is larger than the sum of its proper divisors (61972698).

985897201 is an frugal number, since it uses more digits than its factorization.

985897201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728 (or 1864 counting only the distinct ones).

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

The cubic root of 985897201 is about 995.2767934427.

Multiplying 985897201 by its sum of digits (49), we get a square (48308962849 = 219793²).

The spelling of 985897201 in words is "nine hundred eighty-five million, eight hundred ninety-seven thousand, two hundred one".