84950680369 has 9 divisors (see below), whose sum is σ = 85285132459. Its totient is φ = 84617538160.

The previous prime is 84950680363. The next prime is 84950680391. The reversal of 84950680369 is 96308605948.

The square root of 84950680369 is 291463.

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., 223113969 + 84727566400 = 14937^2 + 291080^2 .

It is a de Polignac number, because none of the positive numbers 2^k-84950680369 is a prime.

It is a super-2 number, since 2×84950680369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84950680363) 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, 111629949 + ... + 111630709.

Almost surely, 2^84950680369 is an apocalyptic number.

84950680369 is the 291463-rd square number.

84950680369 is the 145732-nd centered octagonal number.

It is an amenable number.

84950680369 is a deficient number, since it is larger than the sum of its proper divisors (334452090).

84950680369 is an frugal number, since it uses more digits than its factorization.

84950680369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 84950680369 in words is "eighty-four billion, nine hundred fifty million, six hundred eighty thousand, three hundred sixty-nine".