140553769 has 2 divisors, whose sum is σ = 140553770. Its totient is φ = 140553768.

The previous prime is 140553767. The next prime is 140553823. The reversal of 140553769 is 967355041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129663769 + 10890000 = 11387^2 + 3300^2 .

It is an emirp because it is prime and its reverse (967355041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140553769 - 2¹ = 140553767 is a prime.

It is a super-2 number, since 2×140553769² = 39510723960210722, which contains 22 as substring.

Together with 140553767, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140553767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70276884 + 70276885.

It is an arithmetic number, because the mean of its divisors is an integer number (70276885).

Almost surely, 2^140553769 is an apocalyptic number.

It is an amenable number.

140553769 is a deficient number, since it is larger than the sum of its proper divisors (1).

140553769 is an equidigital number, since it uses as much as digits as its factorization.

140553769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 140553769 is about 11855.5374825438. The cubic root of 140553769 is about 519.9331385927.

The spelling of 140553769 in words is "one hundred forty million, five hundred fifty-three thousand, seven hundred sixty-nine".