140277691 has 4 divisors (see below), whose sum is σ = 140329584. Its totient is φ = 140225800.

The previous prime is 140277673. The next prime is 140277701. The reversal of 140277691 is 196772041.

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

It is a cyclic number.

It is not a de Polignac number, because 140277691 - 2²³ = 131889083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140277691.

It is not an unprimeable number, because it can be changed into a prime (140277661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21655 + ... + 27376.

It is an arithmetic number, because the mean of its divisors is an integer number (35082396).

Almost surely, 2^140277691 is an apocalyptic number.

140277691 is a deficient number, since it is larger than the sum of its proper divisors (51893).

140277691 is an equidigital number, since it uses as much as digits as its factorization.

140277691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51892.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 140277691 is about 11843.8883395615. Note that the first 3 decimals coincide. The cubic root of 140277691 is about 519.5924950859.

The spelling of 140277691 in words is "one hundred forty million, two hundred seventy-seven thousand, six hundred ninety-one".