6931139452 has 6 divisors (see below), whose sum is σ = 12129494048. Its totient is φ = 3465569724.

The previous prime is 6931139431. The next prime is 6931139473. The reversal of 6931139452 is 2549311396.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6931139431) and next prime (6931139473).

It is a junction number, because it is equal to n+sod(n) for n = 6931139399 and 6931139408.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 866392428 + ... + 866392435.

Almost surely, 2^6931139452 is an apocalyptic number.

It is an amenable number.

6931139452 is a deficient number, since it is larger than the sum of its proper divisors (5198354596).

6931139452 is a wasteful number, since it uses less digits than its factorization.

6931139452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732784867 (or 1732784865 counting only the distinct ones).

The product of its digits is 174960, while the sum is 43.

The square root of 6931139452 is about 83253.4651050633. The cubic root of 6931139452 is about 1906.6378588053.

The spelling of 6931139452 in words is "six billion, nine hundred thirty-one million, one hundred thirty-nine thousand, four hundred fifty-two".