140974439 has 2 divisors, whose sum is σ = 140974440. Its totient is φ = 140974438.

The previous prime is 140974411. The next prime is 140974451. The reversal of 140974439 is 934479041.

140974439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (934479041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140974439 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 140974396 and 140974405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140974459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70487219 + 70487220.

It is an arithmetic number, because the mean of its divisors is an integer number (70487220).

Almost surely, 2^140974439 is an apocalyptic number.

140974439 is a deficient number, since it is larger than the sum of its proper divisors (1).

140974439 is an equidigital number, since it uses as much as digits as its factorization.

140974439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 140974439 is about 11873.2657259913. The cubic root of 140974439 is about 520.4513327590.

The spelling of 140974439 in words is "one hundred forty million, nine hundred seventy-four thousand, four hundred thirty-nine".