7877952789 has 32 divisors (see below), whose sum is σ = 12133794816. Its totient is φ = 4453322880.

The previous prime is 7877952773. The next prime is 7877952793. The reversal of 7877952789 is 9872597787.

It is not a de Polignac number, because 7877952789 - 2⁴ = 7877952773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7877952769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1923634 + ... + 1927724.

It is an arithmetic number, because the mean of its divisors is an integer number (379181088).

Almost surely, 2^7877952789 is an apocalyptic number.

It is an amenable number.

7877952789 is a deficient number, since it is larger than the sum of its proper divisors (4255842027).

7877952789 is a wasteful number, since it uses less digits than its factorization.

7877952789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065.

The product of its digits is 124467840, while the sum is 69.

The square root of 7877952789 is about 88757.8322684821. The cubic root of 7877952789 is about 1989.7772356553. Note that the first 3 decimals are identical.

The spelling of 7877952789 in words is "seven billion, eight hundred seventy-seven million, nine hundred fifty-two thousand, seven hundred eighty-nine".