140359817 has 4 divisors (see below), whose sum is σ = 151156740. Its totient is φ = 129562896.

The previous prime is 140359811. The next prime is 140359831. The reversal of 140359817 is 718953041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 718953041 = 25111 ⋅28631.

It can be written as a sum of positive squares in 2 ways, for example, as 61842496 + 78517321 = 7864^2 + 8861^2 .

It is a cyclic number.

It is not a de Polignac number, because 140359817 - 2⁶ = 140359753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140359811) 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, 5398442 + ... + 5398467.

It is an arithmetic number, because the mean of its divisors is an integer number (37789185).

Almost surely, 2^140359817 is an apocalyptic number.

It is an amenable number.

140359817 is a deficient number, since it is larger than the sum of its proper divisors (10796923).

140359817 is a wasteful number, since it uses less digits than its factorization.

140359817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10796922.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 140359817 is about 11847.3548524555. The cubic root of 140359817 is about 519.6938743054.

The spelling of 140359817 in words is "one hundred forty million, three hundred fifty-nine thousand, eight hundred seventeen".