2869865949 has 4 divisors (see below), whose sum is σ = 3826487936. Its totient is φ = 1913243964.

The previous prime is 2869865941. The next prime is 2869865969. The reversal of 2869865949 is 9495689682.

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 not a de Polignac number, because 2869865949 - 2³ = 2869865941 is a prime.

It is a super-2 number, since 2×2869865949² = 16472261130459341202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2869865949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2869865941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478310989 + ... + 478310994.

It is an arithmetic number, because the mean of its divisors is an integer number (956621984).

Almost surely, 2^2869865949 is an apocalyptic number.

It is an amenable number.

2869865949 is a deficient number, since it is larger than the sum of its proper divisors (956621987).

2869865949 is an equidigital number, since it uses as much as digits as its factorization.

2869865949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956621986.

The product of its digits is 67184640, while the sum is 66.

The square root of 2869865949 is about 53571.1298088812. The cubic root of 2869865949 is about 1421.0865764325.

The spelling of 2869865949 in words is "two billion, eight hundred sixty-nine million, eight hundred sixty-five thousand, nine hundred forty-nine".