868390777 has 8 divisors (see below), whose sum is σ = 893402496. Its totient is φ = 843460272.

The previous prime is 868390741. The next prime is 868390807. The reversal of 868390777 is 777093868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 868390777 - 2¹⁵ = 868358009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868390717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1728 + ... + 41710.

It is an arithmetic number, because the mean of its divisors is an integer number (111675312).

Almost surely, 2^868390777 is an apocalyptic number.

It is an amenable number.

868390777 is a deficient number, since it is larger than the sum of its proper divisors (25011719).

868390777 is a wasteful number, since it uses less digits than its factorization.

868390777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40607.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The square root of 868390777 is about 29468.4708968755. The cubic root of 868390777 is about 954.0513141416.

The spelling of 868390777 in words is "eight hundred sixty-eight million, three hundred ninety thousand, seven hundred seventy-seven".