140791394 has 4 divisors (see below), whose sum is σ = 211187094. Its totient is φ = 70395696.

The previous prime is 140791381. The next prime is 140791439. The reversal of 140791394 is 493197041.

140791394 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493197041 = 19 ⋅25957739.

It can be written as a sum of positive squares in only one way, i.e., 126450025 + 14341369 = 11245^2 + 3787^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35197847 + ... + 35197850.

Almost surely, 2^140791394 is an apocalyptic number.

140791394 is a deficient number, since it is larger than the sum of its proper divisors (70395700).

140791394 is an equidigital number, since it uses as much as digits as its factorization.

140791394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70395699.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 140791394 is about 11865.5549385606. The cubic root of 140791394 is about 520.2259791970.

The spelling of 140791394 in words is "one hundred forty million, seven hundred ninety-one thousand, three hundred ninety-four".