140293669 has 2 divisors, whose sum is σ = 140293670. Its totient is φ = 140293668.

The previous prime is 140293667. The next prime is 140293697. The reversal of 140293669 is 966392041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123988225 + 16305444 = 11135^2 + 4038^2 .

It is a cyclic number.

It is not a de Polignac number, because 140293669 - 2¹ = 140293667 is a prime.

It is a super-2 number, since 2×140293669² = 39364627122963122, which contains 22 as substring.

Together with 140293667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140293667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70146834 + 70146835.

It is an arithmetic number, because the mean of its divisors is an integer number (70146835).

Almost surely, 2^140293669 is an apocalyptic number.

It is an amenable number.

140293669 is a deficient number, since it is larger than the sum of its proper divisors (1).

140293669 is an equidigital number, since it uses as much as digits as its factorization.

140293669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 140293669 is about 11844.5628454578. The cubic root of 140293669 is about 519.6122219900.

The spelling of 140293669 in words is "one hundred forty million, two hundred ninety-three thousand, six hundred sixty-nine".