6949139652 has 288 divisors, whose sum is σ = 22222636800. Its totient is φ = 1782383616.

The previous prime is 6949139599. The next prime is 6949139653. The reversal of 6949139652 is 2569319496.

6949139652 is a `hidden beast` number, since 69 + 491 + 3 + 96 + 5 + 2 = 666.

It is a super-2 number, since 2×6949139652² = 96581083805997362208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6949139653) 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 95 ways as a sum of consecutive naturals, for example, 30345474 + ... + 30345702.

Almost surely, 2^6949139652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6949139652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11111318400).

6949139652 is an abundant number, since it is smaller than the sum of its proper divisors (15273497148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6949139652 is a wasteful number, since it uses less digits than its factorization.

6949139652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 470 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 6949139652 is about 83361.4998185613. The cubic root of 6949139652 is about 1908.2869477323.

The spelling of 6949139652 in words is "six billion, nine hundred forty-nine million, one hundred thirty-nine thousand, six hundred fifty-two".