131449839 has 16 divisors (see below), whose sum is σ = 181517952. Its totient is φ = 84557088.

The previous prime is 131449819. The next prime is 131449861. The reversal of 131449839 is 938944131.

It is not a de Polignac number, because 131449839 - 2⁸ = 131449583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131449839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131449819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4569 + ... + 16845.

It is an arithmetic number, because the mean of its divisors is an integer number (11344872).

Almost surely, 2^131449839 is an apocalyptic number.

131449839 is a deficient number, since it is larger than the sum of its proper divisors (50068113).

131449839 is a wasteful number, since it uses less digits than its factorization.

131449839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12406.

The product of its digits is 93312, while the sum is 42.

The square root of 131449839 is about 11465.1576090344. The cubic root of 131449839 is about 508.4559722257.

The spelling of 131449839 in words is "one hundred thirty-one million, four hundred forty-nine thousand, eight hundred thirty-nine".