7977307869 has 16 divisors (see below), whose sum is σ = 11960625600. Its totient is φ = 5254129008.

The previous prime is 7977307867. The next prime is 7977307889. The reversal of 7977307869 is 9687037797.

It is not a de Polignac number, because 7977307869 - 2¹ = 7977307867 is a prime.

It is a super-2 number, since 2×7977307869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7977307867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1777614 + ... + 1782095.

It is an arithmetic number, because the mean of its divisors is an integer number (747539100).

Almost surely, 2^7977307869 is an apocalyptic number.

It is an amenable number.

7977307869 is a deficient number, since it is larger than the sum of its proper divisors (3983317731).

7977307869 is a wasteful number, since it uses less digits than its factorization.

7977307869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559801 (or 3559795 counting only the distinct ones).

The product of its (nonzero) digits is 28005264, while the sum is 63.

The square root of 7977307869 is about 89315.7761484498. The cubic root of 7977307869 is about 1998.1071982993.

The spelling of 7977307869 in words is "seven billion, nine hundred seventy-seven million, three hundred seven thousand, eight hundred sixty-nine".