139759727 has 2 divisors, whose sum is σ = 139759728. Its totient is φ = 139759726.

The previous prime is 139759681. The next prime is 139759733. The reversal of 139759727 is 727957931.

It is a strong prime.

It is an emirp because it is prime and its reverse (727957931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139759727 - 2⁶ = 139759663 is a prime.

It is a super-2 number, since 2×139759727² = 39065562582229058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139752727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69879863 + 69879864.

It is an arithmetic number, because the mean of its divisors is an integer number (69879864).

Almost surely, 2^139759727 is an apocalyptic number.

139759727 is a deficient number, since it is larger than the sum of its proper divisors (1).

139759727 is an equidigital number, since it uses as much as digits as its factorization.

139759727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 833490, while the sum is 50.

The square root of 139759727 is about 11822.0018186431. The cubic root of 139759727 is about 518.9521886253.

The spelling of 139759727 in words is "one hundred thirty-nine million, seven hundred fifty-nine thousand, seven hundred twenty-seven".