140199679 has 4 divisors (see below), whose sum is σ = 140904400. Its totient is φ = 139494960.

The previous prime is 140199671. The next prime is 140199713. The reversal of 140199679 is 976991041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976991041 = 13 ⋅75153157.

It is a cyclic number.

It is not a de Polignac number, because 140199679 - 2³ = 140199671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140199671) 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, 352062 + ... + 352459.

It is an arithmetic number, because the mean of its divisors is an integer number (35226100).

Almost surely, 2^140199679 is an apocalyptic number.

140199679 is a deficient number, since it is larger than the sum of its proper divisors (704721).

140199679 is an equidigital number, since it uses as much as digits as its factorization.

140199679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704720.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 140199679 is about 11840.5945374377. The cubic root of 140199679 is about 519.4961576810.

The spelling of 140199679 in words is "one hundred forty million, one hundred ninety-nine thousand, six hundred seventy-nine".