139953271 has 2 divisors, whose sum is σ = 139953272. Its totient is φ = 139953270.

The previous prime is 139953269. The next prime is 139953349. The reversal of 139953271 is 172359931.

139953271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139953271 - 2¹ = 139953269 is a prime.

Together with 139953269, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139953071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69976635 + 69976636.

It is an arithmetic number, because the mean of its divisors is an integer number (69976636).

Almost surely, 2^139953271 is an apocalyptic number.

139953271 is a deficient number, since it is larger than the sum of its proper divisors (1).

139953271 is an equidigital number, since it uses as much as digits as its factorization.

139953271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51030, while the sum is 40.

The square root of 139953271 is about 11830.1847407384. The cubic root of 139953271 is about 519.1916323142.

The spelling of 139953271 in words is "one hundred thirty-nine million, nine hundred fifty-three thousand, two hundred seventy-one".