140439061549 has 2 divisors, whose sum is σ = 140439061550. Its totient is φ = 140439061548.

The previous prime is 140439061463. The next prime is 140439061589. The reversal of 140439061549 is 945160934041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127087259049 + 13351802500 = 356493^2 + 115550^2 .

It is a cyclic number.

It is not a de Polignac number, because 140439061549 - 2¹³ = 140439053357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140439061499 and 140439061508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140439061589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70219530774 + 70219530775.

It is an arithmetic number, because the mean of its divisors is an integer number (70219530775).

Almost surely, 2^140439061549 is an apocalyptic number.

It is an amenable number.

140439061549 is a deficient number, since it is larger than the sum of its proper divisors (1).

140439061549 is an equidigital number, since it uses as much as digits as its factorization.

140439061549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 140439061549 in words is "one hundred forty billion, four hundred thirty-nine million, sixty-one thousand, five hundred forty-nine".