139743008 has 12 divisors (see below), whose sum is σ = 275119110. Its totient is φ = 69871488.

The previous prime is 139743007. The next prime is 139743011. The reversal of 139743008 is 800347931.

It can be written as a sum of positive squares in only one way, i.e., 75550864 + 64192144 = 8692^2 + 8012^2 .

It is not an unprimeable number, because it can be changed into a prime (139743007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2183453 + ... + 2183516.

Almost surely, 2^139743008 is an apocalyptic number.

It is an amenable number.

139743008 is a deficient number, since it is larger than the sum of its proper divisors (135376102).

139743008 is an equidigital number, since it uses as much as digits as its factorization.

139743008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366979 (or 4366971 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 139743008 is about 11821.2946837476. The cubic root of 139743008 is about 518.9314942812.

The spelling of 139743008 in words is "one hundred thirty-nine million, seven hundred forty-three thousand, eight".