140388139 has 8 divisors (see below), whose sum is σ = 141203088. Its totient is φ = 139576320.

The previous prime is 140388137. The next prime is 140388167. The reversal of 140388139 is 931883041.

140388139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140388139 - 2¹ = 140388137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140388098 and 140388107.

It is not an unprimeable number, because it can be changed into a prime (140388133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243019 + ... + 243595.

It is an arithmetic number, because the mean of its divisors is an integer number (17650386).

Almost surely, 2^140388139 is an apocalyptic number.

140388139 is a deficient number, since it is larger than the sum of its proper divisors (814949).

140388139 is an equidigital number, since it uses as much as digits as its factorization.

140388139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 140388139 is about 11848.5500800731. The cubic root of 140388139 is about 519.7288268066.

The spelling of 140388139 in words is "one hundred forty million, three hundred eighty-eight thousand, one hundred thirty-nine".