849189407 has 8 divisors (see below), whose sum is σ = 938115840. Its totient is φ = 762217560.

The previous prime is 849189403. The next prime is 849189409. The reversal of 849189407 is 704981948.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 849189407 - 2² = 849189403 is a prime.

It is a super-2 number, since 2×849189407² = 1442245297922023298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849189403) 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 7 ways as a sum of consecutive naturals, for example, 487733 + ... + 489470.

It is an arithmetic number, because the mean of its divisors is an integer number (117264480).

Almost surely, 2^849189407 is an apocalyptic number.

849189407 is a deficient number, since it is larger than the sum of its proper divisors (88926433).

849189407 is a wasteful number, since it uses less digits than its factorization.

849189407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977293.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 849189407 is about 29140.8546031169. The cubic root of 849189407 is about 946.9670241604.

The spelling of 849189407 in words is "eight hundred forty-nine million, one hundred eighty-nine thousand, four hundred seven".