131889447 has 6 divisors (see below), whose sum is σ = 190506992. Its totient is φ = 87926292.

The previous prime is 131889427. The next prime is 131889449. The reversal of 131889447 is 744988131.

It is a happy number.

It is not a de Polignac number, because 131889447 - 2¹⁵ = 131856679 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 (131889449) 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 5 ways as a sum of consecutive naturals, for example, 7327183 + ... + 7327200.

Almost surely, 2^131889447 is an apocalyptic number.

131889447 is a deficient number, since it is larger than the sum of its proper divisors (58617545).

131889447 is a wasteful number, since it uses less digits than its factorization.

131889447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14654389 (or 14654386 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 131889447 is about 11484.3130835066. The cubic root of 131889447 is about 509.0221516961.

The spelling of 131889447 in words is "one hundred thirty-one million, eight hundred eighty-nine thousand, four hundred forty-seven".