8007861944 has 8 divisors (see below), whose sum is σ = 15014741160. Its totient is φ = 4003930968.

The previous prime is 8007861943. The next prime is 8007861949. The reversal of 8007861944 is 4491687008.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8007861943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500491364 + ... + 500491379.

It is an arithmetic number, because the mean of its divisors is an integer number (1876842645).

Almost surely, 2^8007861944 is an apocalyptic number.

It is an amenable number.

8007861944 is a deficient number, since it is larger than the sum of its proper divisors (7006879216).

8007861944 is a wasteful number, since it uses less digits than its factorization.

8007861944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000982749 (or 1000982745 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 8007861944 is about 89486.6579105511. The cubic root of 8007861944 is about 2000.6549474985.

The spelling of 8007861944 in words is "eight billion, seven million, eight hundred sixty-one thousand, nine hundred forty-four".