132958991 has 4 divisors (see below), whose sum is σ = 145046184. Its totient is φ = 120871800.

The previous prime is 132958981. The next prime is 132958999. The reversal of 132958991 is 199859231.

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

It is a cyclic number.

It is not a de Polignac number, because 132958991 - 2¹⁰ = 132957967 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 (132958999) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6043580 + ... + 6043601.

It is an arithmetic number, because the mean of its divisors is an integer number (36261546).

Almost surely, 2^132958991 is an apocalyptic number.

132958991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

132958991 is a deficient number, since it is larger than the sum of its proper divisors (12087193).

132958991 is a wasteful number, since it uses less digits than its factorization.

132958991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12087192.

The product of its digits is 174960, while the sum is 47.

The square root of 132958991 is about 11530.7844919589. The cubic root of 132958991 is about 510.3944033590.

The spelling of 132958991 in words is "one hundred thirty-two million, nine hundred fifty-eight thousand, nine hundred ninety-one".