136947843 has 12 divisors (see below), whose sum is σ = 200318560. Its totient is φ = 90142416.

The previous prime is 136947827. The next prime is 136947851. The reversal of 136947843 is 348749631.

136947843 is a `hidden beast` number, since 136 + 9 + 478 + 43 = 666.

It is not a de Polignac number, because 136947843 - 2⁴ = 136947827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136947883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95596 + ... + 97017.

Almost surely, 2^136947843 is an apocalyptic number.

136947843 is a deficient number, since it is larger than the sum of its proper divisors (63370717).

136947843 is a wasteful number, since it uses less digits than its factorization.

136947843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192698 (or 192695 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 136947843 is about 11702.4716620037. The cubic root of 136947843 is about 515.4482451789.

The spelling of 136947843 in words is "one hundred thirty-six million, nine hundred forty-seven thousand, eight hundred forty-three".