140583991 has 2 divisors, whose sum is σ = 140583992. Its totient is φ = 140583990.

The previous prime is 140583959. The next prime is 140583997. The reversal of 140583991 is 199385041.

It is a strong prime.

It is an emirp because it is prime and its reverse (199385041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140583991 - 2⁵ = 140583959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140583997) 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, 70291995 + 70291996.

It is an arithmetic number, because the mean of its divisors is an integer number (70291996).

Almost surely, 2^140583991 is an apocalyptic number.

140583991 is a deficient number, since it is larger than the sum of its proper divisors (1).

140583991 is an equidigital number, since it uses as much as digits as its factorization.

140583991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 140583991 is about 11856.8120082930. The cubic root of 140583991 is about 519.9704014218.

The spelling of 140583991 in words is "one hundred forty million, five hundred eighty-three thousand, nine hundred ninety-one".