140669299 has 4 divisors (see below), whose sum is σ = 140742360. Its totient is φ = 140596240.

The previous prime is 140669239. The next prime is 140669317. The reversal of 140669299 is 992966041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 992966041 = 103 ⋅9640447.

It is a cyclic number.

It is not a de Polignac number, because 140669299 - 2¹¹ = 140667251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140669239) 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 in 3 ways as a sum of consecutive naturals, for example, 33562 + ... + 37519.

It is an arithmetic number, because the mean of its divisors is an integer number (35185590).

Almost surely, 2^140669299 is an apocalyptic number.

140669299 is a deficient number, since it is larger than the sum of its proper divisors (73061).

140669299 is an equidigital number, since it uses as much as digits as its factorization.

140669299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73060.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 140669299 is about 11860.4088883984. The cubic root of 140669299 is about 520.0755548499.

The spelling of 140669299 in words is "one hundred forty million, six hundred sixty-nine thousand, two hundred ninety-nine".