6840423486 has 32 divisors (see below), whose sum is σ = 16370245920. Its totient is φ = 2104745472.

The previous prime is 6840423461. The next prime is 6840423487. The reversal of 6840423486 is 6843240486.

6840423486 is a `hidden beast` number, since 6 + 8 + 404 + 234 + 8 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840423487) 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, 4871395 + ... + 4872798.

It is an arithmetic number, because the mean of its divisors is an integer number (511570185).

Almost surely, 2^6840423486 is an apocalyptic number.

6840423486 is an abundant number, since it is smaller than the sum of its proper divisors (9529822434).

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

6840423486 is a wasteful number, since it uses less digits than its factorization.

6840423486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9744217 (or 9744211 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

The square root of 6840423486 is about 82706.8527148748. The cubic root of 6840423486 is about 1898.2831662241.

The spelling of 6840423486 in words is "six billion, eight hundred forty million, four hundred twenty-three thousand, four hundred eighty-six".