861484169 has 32 divisors (see below), whose sum is σ = 1101375744. Its totient is φ = 655672320.

The previous prime is 861484147. The next prime is 861484171. The reversal of 861484169 is 961484168.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-861484169 is a prime.

It is a super-2 number, since 2×861484169² = 1484309946875241122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (861484139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270782 + ... + 273944.

It is an arithmetic number, because the mean of its divisors is an integer number (34417992).

Almost surely, 2^861484169 is an apocalyptic number.

It is an amenable number.

861484169 is a deficient number, since it is larger than the sum of its proper divisors (239891575).

861484169 is a wasteful number, since it uses less digits than its factorization.

861484169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297.

The product of its digits is 331776, while the sum is 47.

The square root of 861484169 is about 29351.0505604144. The cubic root of 861484169 is about 951.5152804092.

Subtracting 861484169 from its reverse (961484168), we obtain a palindrome (99999999).

The spelling of 861484169 in words is "eight hundred sixty-one million, four hundred eighty-four thousand, one hundred sixty-nine".