849909407 has 6 divisors (see below), whose sum is σ = 902845248. Its totient is φ = 799914464.

The previous prime is 849909371. The next prime is 849909421. The reversal of 849909407 is 704909948.

It is not a de Polignac number, because 849909407 - 2¹² = 849905311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849909427) 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, 1470143 + ... + 1470720.

It is an arithmetic number, because the mean of its divisors is an integer number (150474208).

Almost surely, 2^849909407 is an apocalyptic number.

849909407 is a deficient number, since it is larger than the sum of its proper divisors (52935841).

849909407 is a wasteful number, since it uses less digits than its factorization.

849909407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940897 (or 2940880 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 849909407 is about 29153.2057756947. The cubic root of 849909407 is about 947.2345827073.

The spelling of 849909407 in words is "eight hundred forty-nine million, nine hundred nine thousand, four hundred seven".