4127969781 has 48 divisors (see below), whose sum is σ = 6739963776. Its totient is φ = 2415523968.

The previous prime is 4127969759. The next prime is 4127969837. The reversal of 4127969781 is 1879697214.

It is not a de Polignac number, because 4127969781 - 2⁷ = 4127969653 is a prime.

It is a super-2 number, since 2×4127969781² = 34080269025698375922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4127969731) 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 47 ways as a sum of consecutive naturals, for example, 461110 + ... + 469976.

It is an arithmetic number, because the mean of its divisors is an integer number (140415912).

Almost surely, 2^4127969781 is an apocalyptic number.

It is an amenable number.

4127969781 is a deficient number, since it is larger than the sum of its proper divisors (2611993995).

4127969781 is a wasteful number, since it uses less digits than its factorization.

4127969781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082 (or 9079 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 4127969781 is about 64249.2784473102. The cubic root of 4127969781 is about 1604.1519484093.

The spelling of 4127969781 in words is "four billion, one hundred twenty-seven million, nine hundred sixty-nine thousand, seven hundred eighty-one".