139967983 has 2 divisors, whose sum is σ = 139967984. Its totient is φ = 139967982.

The previous prime is 139967959. The next prime is 139968011. The reversal of 139967983 is 389769931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139967983 - 2¹⁷ = 139836911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139967183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69983991 + 69983992.

It is an arithmetic number, because the mean of its divisors is an integer number (69983992).

Almost surely, 2^139967983 is an apocalyptic number.

139967983 is a deficient number, since it is larger than the sum of its proper divisors (1).

139967983 is an equidigital number, since it uses as much as digits as its factorization.

139967983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 55.

The square root of 139967983 is about 11830.8065236483. The cubic root of 139967983 is about 519.2098242902.

The spelling of 139967983 in words is "one hundred thirty-nine million, nine hundred sixty-seven thousand, nine hundred eighty-three".