132199991 has 12 divisors (see below), whose sum is σ = 167764680. Its totient is φ = 103012560.

The previous prime is 132199987. The next prime is 132199997. The reversal of 132199991 is 199991231.

It is not a de Polignac number, because 132199991 - 2² = 132199987 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132199997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122096 + ... + 123173.

It is an arithmetic number, because the mean of its divisors is an integer number (13980390).

Almost surely, 2^132199991 is an apocalyptic number.

132199991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

132199991 is a deficient number, since it is larger than the sum of its proper divisors (35564689).

132199991 is a wasteful number, since it uses less digits than its factorization.

132199991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245294 (or 245287 counting only the distinct ones).

The product of its digits is 39366, while the sum is 44.

The square root of 132199991 is about 11497.8254900655. The cubic root of 132199991 is about 509.4213493448.

The spelling of 132199991 in words is "one hundred thirty-two million, one hundred ninety-nine thousand, nine hundred ninety-one".