868869149 has 4 divisors (see below), whose sum is σ = 879337536. Its totient is φ = 858400764.

The previous prime is 868869109. The next prime is 868869161. The reversal of 868869149 is 941968868.

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 a de Polignac number, because none of the positive numbers 2^k-868869149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868869109) 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, 5234069 + ... + 5234234.

It is an arithmetic number, because the mean of its divisors is an integer number (219834384).

Almost surely, 2^868869149 is an apocalyptic number.

It is an amenable number.

868869149 is a deficient number, since it is larger than the sum of its proper divisors (10468387).

868869149 is a wasteful number, since it uses less digits than its factorization.

868869149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10468386.

The product of its digits is 5971968, while the sum is 59.

The square root of 868869149 is about 29476.5864543369. The cubic root of 868869149 is about 954.2264686414.

The spelling of 868869149 in words is "eight hundred sixty-eight million, eight hundred sixty-nine thousand, one hundred forty-nine".