133973629 has 4 divisors (see below), whose sum is σ = 136169980. Its totient is φ = 131777280.

The previous prime is 133973627. The next prime is 133973639. The reversal of 133973629 is 926379331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23765625 + 110208004 = 4875^2 + 10498^2 .

It is a cyclic number.

It is not a de Polignac number, because 133973629 - 2¹ = 133973627 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133973627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098084 + ... + 1098205.

It is an arithmetic number, because the mean of its divisors is an integer number (34042495).

Almost surely, 2^133973629 is an apocalyptic number.

It is an amenable number.

133973629 is a deficient number, since it is larger than the sum of its proper divisors (2196351).

133973629 is an equidigital number, since it uses as much as digits as its factorization.

133973629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196350.

The product of its digits is 183708, while the sum is 43.

The square root of 133973629 is about 11574.6977930311. The cubic root of 133973629 is about 511.6894237150.

The spelling of 133973629 in words is "one hundred thirty-three million, nine hundred seventy-three thousand, six hundred twenty-nine".