849864015 has 256 divisors, whose sum is σ = 2141798400. Its totient is φ = 307929600.

The previous prime is 849864013. The next prime is 849864023. The reversal of 849864015 is 510468948.

It is not a de Polignac number, because 849864015 - 2¹ = 849864013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849864013) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2567400 + ... + 2567730.

It is an arithmetic number, because the mean of its divisors is an integer number (8366400).

Almost surely, 2^849864015 is an apocalyptic number.

849864015 is an abundant number, since it is smaller than the sum of its proper divisors (1291934385).

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

849864015 is a wasteful number, since it uses less digits than its factorization.

849864015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 849864015 is about 29152.4272574343. The cubic root of 849864015 is about 947.2177190913.

The spelling of 849864015 in words is "eight hundred forty-nine million, eight hundred sixty-four thousand, fifteen".