849189400 has 24 divisors (see below), whose sum is σ = 1974365820. Its totient is φ = 339675680.

The previous prime is 849189379. The next prime is 849189403. The reversal of 849189400 is 4981948.

It is a super-2 number, since 2×849189400² = 1442245274144720000, which contains 22 as substring.

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2122774 + ... + 2123173.

Almost surely, 2^849189400 is an apocalyptic number.

It is an amenable number.

849189400 is an abundant number, since it is smaller than the sum of its proper divisors (1125176420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

849189400 is a wasteful number, since it uses less digits than its factorization.

849189400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245963 (or 4245954 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 849189400 is about 29140.8544830106. The cubic root of 849189400 is about 946.9670215584.

The spelling of 849189400 in words is "eight hundred forty-nine million, one hundred eighty-nine thousand, four hundred".