849845407 has 4 divisors (see below), whose sum is σ = 865880280. Its totient is φ = 833810536.

The previous prime is 849845401. The next prime is 849845429. The reversal of 849845407 is 704548948.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 849845407 - 2⁷ = 849845279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849845401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8017357 + ... + 8017462.

It is an arithmetic number, because the mean of its divisors is an integer number (216470070).

Almost surely, 2^849845407 is an apocalyptic number.

849845407 is a deficient number, since it is larger than the sum of its proper divisors (16034873).

849845407 is a wasteful number, since it uses less digits than its factorization.

849845407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16034872.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The square root of 849845407 is about 29152.1081055899. The cubic root of 849845407 is about 947.2108058457.

The spelling of 849845407 in words is "eight hundred forty-nine million, eight hundred forty-five thousand, four hundred seven".