868047988 has 24 divisors (see below), whose sum is σ = 1590188544. Its totient is φ = 414103200.

The previous prime is 868047977. The next prime is 868047989. The reversal of 868047988 is 889740868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868047989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40495 + ... + 58102.

It is an arithmetic number, because the mean of its divisors is an integer number (66257856).

Almost surely, 2^868047988 is an apocalyptic number.

It is an amenable number.

868047988 is a deficient number, since it is larger than the sum of its proper divisors (722140556).

868047988 is a wasteful number, since it uses less digits than its factorization.

868047988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98703 (or 98701 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 58.

The square root of 868047988 is about 29462.6541234832. The cubic root of 868047988 is about 953.9257633927.

The spelling of 868047988 in words is "eight hundred sixty-eight million, forty-seven thousand, nine hundred eighty-eight".