787934971 has 4 divisors (see below), whose sum is σ = 788014512. Its totient is φ = 787855432.

The previous prime is 787934963. The next prime is 787934981. The reversal of 787934971 is 179439787.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 787934971 - 2³ = 787934963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (787934951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22375 + ... + 45568.

It is an arithmetic number, because the mean of its divisors is an integer number (197003628).

Almost surely, 2^787934971 is an apocalyptic number.

787934971 is a deficient number, since it is larger than the sum of its proper divisors (79541).

787934971 is a wasteful number, since it uses less digits than its factorization.

787934971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79540.

The product of its digits is 2667168, while the sum is 55.

The square root of 787934971 is about 28070.1793902355. The cubic root of 787934971 is about 923.6273660159.

The spelling of 787934971 in words is "seven hundred eighty-seven million, nine hundred thirty-four thousand, nine hundred seventy-one".