133866843 has 16 divisors (see below), whose sum is σ = 197184000. Its totient is φ = 80102880.

The previous prime is 133866839. The next prime is 133866853. The reversal of 133866843 is 348668331.

It is not a de Polignac number, because 133866843 - 2² = 133866839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133866795 and 133866804.

It is not an unprimeable number, because it can be changed into a prime (133866833) 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, 23068 + ... + 28281.

It is an arithmetic number, because the mean of its divisors is an integer number (12324000).

Almost surely, 2^133866843 is an apocalyptic number.

133866843 is a deficient number, since it is larger than the sum of its proper divisors (63317157).

133866843 is a wasteful number, since it uses less digits than its factorization.

133866843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51442.

The product of its digits is 248832, while the sum is 42.

The square root of 133866843 is about 11570.0839668518. The cubic root of 133866843 is about 511.5534372744.

The spelling of 133866843 in words is "one hundred thirty-three million, eight hundred sixty-six thousand, eight hundred forty-three".