133979061 has 4 divisors (see below), whose sum is σ = 178638752. Its totient is φ = 89319372.

The previous prime is 133979039. The next prime is 133979063. The reversal of 133979061 is 160979331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160979331 = 3 ⋅53659777.

It is not a de Polignac number, because 133979061 - 2¹³ = 133970869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133979063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22329841 + ... + 22329846.

It is an arithmetic number, because the mean of its divisors is an integer number (44659688).

Almost surely, 2^133979061 is an apocalyptic number.

It is an amenable number.

133979061 is a deficient number, since it is larger than the sum of its proper divisors (44659691).

133979061 is an equidigital number, since it uses as much as digits as its factorization.

133979061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44659690.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 133979061 is about 11574.9324404076. The cubic root of 133979061 is about 511.6963391540.

The spelling of 133979061 in words is "one hundred thirty-three million, nine hundred seventy-nine thousand, sixty-one".