132809389 has 8 divisors (see below), whose sum is σ = 140748408. Its totient is φ = 124884480.

The previous prime is 132809387. The next prime is 132809399. The reversal of 132809389 is 983908231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10530025 + 122279364 = 3245^2 + 11058^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 132809389 - 2¹ = 132809387 is a prime.

It is a super-4 number, since 4×132809389⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132809387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20649 + ... + 26305.

It is an arithmetic number, because the mean of its divisors is an integer number (17593551).

Almost surely, 2^132809389 is an apocalyptic number.

It is an amenable number.

132809389 is a deficient number, since it is larger than the sum of its proper divisors (7939019).

132809389 is a wasteful number, since it uses less digits than its factorization.

132809389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7055.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 132809389 is about 11524.2955966948. The cubic root of 132809389 is about 510.2029040132.

The spelling of 132809389 in words is "one hundred thirty-two million, eight hundred nine thousand, three hundred eighty-nine".