868977381 has 8 divisors (see below), whose sum is σ = 1172596320. Its totient is φ = 572338352.

The previous prime is 868977379. The next prime is 868977397. The reversal of 868977381 is 183779868.

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 868977381 - 2¹ = 868977379 is a prime.

It is a super-2 number, since 2×868977381² = 1510243377379238322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868977481) 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, 1744686 + ... + 1745183.

It is an arithmetic number, because the mean of its divisors is an integer number (146574540).

Almost surely, 2^868977381 is an apocalyptic number.

It is an amenable number.

868977381 is a deficient number, since it is larger than the sum of its proper divisors (303618939).

868977381 is a wasteful number, since it uses less digits than its factorization.

868977381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489955.

The product of its digits is 4064256, while the sum is 57.

The square root of 868977381 is about 29478.4222949601. The cubic root of 868977381 is about 954.2660885509.

The spelling of 868977381 in words is "eight hundred sixty-eight million, nine hundred seventy-seven thousand, three hundred eighty-one".