133979856 has 40 divisors (see below), whose sum is σ = 366476544. Its totient is φ = 42032640.

The previous prime is 133979843. The next prime is 133979891. The reversal of 133979856 is 658979331.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 133979799 and 133979808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81280 + ... + 82911.

Almost surely, 2^133979856 is an apocalyptic number.

133979856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133979856 is an abundant number, since it is smaller than the sum of its proper divisors (232496688).

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

133979856 is a wasteful number, since it uses less digits than its factorization.

133979856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164219 (or 164213 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 51.

The square root of 133979856 is about 11574.9667818098. The cubic root of 133979856 is about 511.6973512470.

The spelling of 133979856 in words is "one hundred thirty-three million, nine hundred seventy-nine thousand, eight hundred fifty-six".