140673493 has 2 divisors, whose sum is σ = 140673494. Its totient is φ = 140673492.

The previous prime is 140673479. The next prime is 140673499. The reversal of 140673493 is 394376041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137874564 + 2798929 = 11742^2 + 1673^2 .

It is a cyclic number.

It is not a de Polignac number, because 140673493 - 2¹⁷ = 140542421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140673499) by changing a digit.

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, 70336746 + 70336747.

It is an arithmetic number, because the mean of its divisors is an integer number (70336747).

Almost surely, 2^140673493 is an apocalyptic number.

It is an amenable number.

140673493 is a deficient number, since it is larger than the sum of its proper divisors (1).

140673493 is an equidigital number, since it uses as much as digits as its factorization.

140673493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 140673493 is about 11860.5856938011. The cubic root of 140673493 is about 520.0807234148.

The spelling of 140673493 in words is "one hundred forty million, six hundred seventy-three thousand, four hundred ninety-three".