787948871 has 4 divisors (see below), whose sum is σ = 792351000. Its totient is φ = 783546744.

The previous prime is 787948853. The next prime is 787948891. The reversal of 787948871 is 178849787.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 787948871 - 2⁶ = 787948807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 787948871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787948891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2200796 + ... + 2201153.

It is an arithmetic number, because the mean of its divisors is an integer number (198087750).

Almost surely, 2^787948871 is an apocalyptic number.

787948871 is a deficient number, since it is larger than the sum of its proper divisors (4402129).

787948871 is a wasteful number, since it uses less digits than its factorization.

787948871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402128.

The product of its digits is 6322176, while the sum is 59.

The square root of 787948871 is about 28070.4269828587. The cubic root of 787948871 is about 923.6327972360.

The spelling of 787948871 in words is "seven hundred eighty-seven million, nine hundred forty-eight thousand, eight hundred seventy-one".