133979949 has 12 divisors (see below), whose sum is σ = 193693500. Its totient is φ = 89242944.

The previous prime is 133979947. The next prime is 133979953. The reversal of 133979949 is 949979331.

It can be written as a sum of positive squares in 2 ways, for example, as 120890025 + 13089924 = 10995^2 + 3618^2 .

It is not a de Polignac number, because 133979949 - 2¹ = 133979947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133979895 and 133979904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133979947) 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 11 ways as a sum of consecutive naturals, for example, 5827 + ... + 17375.

It is an arithmetic number, because the mean of its divisors is an integer number (16141125).

Almost surely, 2^133979949 is an apocalyptic number.

It is an amenable number.

133979949 is a deficient number, since it is larger than the sum of its proper divisors (59713551).

133979949 is a wasteful number, since it uses less digits than its factorization.

133979949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12844 (or 12841 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 54.

The square root of 133979949 is about 11574.9707990992. The cubic root of 133979949 is about 511.6974696425.

The spelling of 133979949 in words is "one hundred thirty-three million, nine hundred seventy-nine thousand, nine hundred forty-nine".