867048981 has 4 divisors (see below), whose sum is σ = 1156065312. Its totient is φ = 578032652.

The previous prime is 867048967. The next prime is 867048991. The reversal of 867048981 is 189840768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 867048981 - 2¹³ = 867040789 is a prime.

It is a super-2 number, since 2×867048981² = 1503547870906276722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867048901) 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, 144508161 + ... + 144508166.

It is an arithmetic number, because the mean of its divisors is an integer number (289016328).

Almost surely, 2^867048981 is an apocalyptic number.

It is an amenable number.

867048981 is a deficient number, since it is larger than the sum of its proper divisors (289016331).

867048981 is a wasteful number, since it uses less digits than its factorization.

867048981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289016330.

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 867048981 is about 29445.6954579103. The cubic root of 867048981 is about 953.5596759775.

The spelling of 867048981 in words is "eight hundred sixty-seven million, forty-eight thousand, nine hundred eighty-one".