140084639 has 2 divisors, whose sum is σ = 140084640. Its totient is φ = 140084638.

The previous prime is 140084621. The next prime is 140084699. The reversal of 140084639 is 936480041.

140084639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140084639 - 2²⁴ = 123307423 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140084599 and 140084608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140084699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70042319 + 70042320.

It is an arithmetic number, because the mean of its divisors is an integer number (70042320).

Almost surely, 2^140084639 is an apocalyptic number.

140084639 is a deficient number, since it is larger than the sum of its proper divisors (1).

140084639 is an equidigital number, since it uses as much as digits as its factorization.

140084639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 140084639 is about 11835.7356763321. The cubic root of 140084639 is about 519.3540289879.

The spelling of 140084639 in words is "one hundred forty million, eighty-four thousand, six hundred thirty-nine".