6131439 has 6 divisors (see below), whose sum is σ = 8856536. Its totient is φ = 4087620.

The previous prime is 6131431. The next prime is 6131443. The reversal of 6131439 is 9341316.

6131439 is a `hidden beast` number, since 613 + 1 + 43 + 9 = 666.

It is not a de Polignac number, because 6131439 - 2³ = 6131431 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 (6131431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340627 + ... + 340644.

Almost surely, 2^6131439 is an apocalyptic number.

6131439 is a deficient number, since it is larger than the sum of its proper divisors (2725097).

6131439 is a wasteful number, since it uses less digits than its factorization.

6131439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681277 (or 681274 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 6131439 is about 2476.1742668883. The cubic root of 6131439 is about 183.0293780659.

The spelling of 6131439 in words is "six million, one hundred thirty-one thousand, four hundred thirty-nine".