140777689 has 4 divisors (see below), whose sum is σ = 151606756. Its totient is φ = 129948624.

The previous prime is 140777683. The next prime is 140777701. The reversal of 140777689 is 986777041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56505289 + 84272400 = 7517^2 + 9180^2 .

It is not a de Polignac number, because 140777689 - 2¹⁷ = 140646617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140777683) 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 in 3 ways as a sum of consecutive naturals, for example, 5414514 + ... + 5414539.

It is an arithmetic number, because the mean of its divisors is an integer number (37901689).

Almost surely, 2^140777689 is an apocalyptic number.

It is an amenable number.

140777689 is a deficient number, since it is larger than the sum of its proper divisors (10829067).

140777689 is a wasteful number, since it uses less digits than its factorization.

140777689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10829066.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 140777689 is about 11864.9774125364. The cubic root of 140777689 is about 520.2090985998.

The spelling of 140777689 in words is "one hundred forty million, seven hundred seventy-seven thousand, six hundred eighty-nine".