849542040 has 64 divisors (see below), whose sum is σ = 2831810400. Its totient is φ = 226544256.

The previous prime is 849542039. The next prime is 849542047. The reversal of 849542040 is 40245948.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 849541986 and 849542004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849542047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392227 + ... + 394386.

Almost surely, 2^849542040 is an apocalyptic number.

It is an amenable number.

849542040 is an abundant number, since it is smaller than the sum of its proper divisors (1982268360).

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

849542040 is a wasteful number, since it uses less digits than its factorization.

849542040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786633 (or 786623 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 849542040 is about 29146.9044668555. The cubic root of 849542040 is about 947.0980846784.

Adding to 849542040 its reverse (40245948), we get a palindrome (889787988).

The spelling of 849542040 in words is "eight hundred forty-nine million, five hundred forty-two thousand, forty".