140649463289 has 4 divisors (see below), whose sum is σ = 148052066640. Its totient is φ = 133246859940.

The previous prime is 140649463267. The next prime is 140649463313. The reversal of 140649463289 is 982364946041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982364946041 = 458039 ⋅2144719.

It is a cyclic number.

It is not a de Polignac number, because 140649463289 - 2⁸ = 140649463033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140649463259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3701301647 + ... + 3701301684.

It is an arithmetic number, because the mean of its divisors is an integer number (37013016660).

Almost surely, 2^140649463289 is an apocalyptic number.

140649463289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

140649463289 is a deficient number, since it is larger than the sum of its proper divisors (7402603351).

140649463289 is an equidigital number, since it uses as much as digits as its factorization.

140649463289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7402603350.

The product of its (nonzero) digits is 8957952, while the sum is 56.

The spelling of 140649463289 in words is "one hundred forty billion, six hundred forty-nine million, four hundred sixty-three thousand, two hundred eighty-nine".