139227371 has 2 divisors, whose sum is σ = 139227372. Its totient is φ = 139227370.

The previous prime is 139227353. The next prime is 139227373. The reversal of 139227371 is 173722931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139227371 is a prime.

Together with 139227373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139227373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69613685 + 69613686.

It is an arithmetic number, because the mean of its divisors is an integer number (69613686).

Almost surely, 2^139227371 is an apocalyptic number.

139227371 is a deficient number, since it is larger than the sum of its proper divisors (1).

139227371 is an equidigital number, since it uses as much as digits as its factorization.

139227371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 35.

The square root of 139227371 is about 11799.4648607469. The cubic root of 139227371 is about 518.2924400787.

The spelling of 139227371 in words is "one hundred thirty-nine million, two hundred twenty-seven thousand, three hundred seventy-one".