139876069 has 2 divisors, whose sum is σ = 139876070. Its totient is φ = 139876068.

The previous prime is 139876067. The next prime is 139876073. The reversal of 139876069 is 960678931.

139876069 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 can be written as a sum of positive squares in only one way, i.e., 86731969 + 53144100 = 9313^2 + 7290^2 .

It is a cyclic number.

It is not a de Polignac number, because 139876069 - 2¹ = 139876067 is a prime.

It is a super-2 number, since 2×139876069² = 39130629357785522, which contains 22 as substring.

Together with 139876067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139876067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69938034 + 69938035.

It is an arithmetic number, because the mean of its divisors is an integer number (69938035).

Almost surely, 2^139876069 is an apocalyptic number.

It is an amenable number.

139876069 is a deficient number, since it is larger than the sum of its proper divisors (1).

139876069 is an equidigital number, since it uses as much as digits as its factorization.

139876069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 139876069 is about 11826.9213661037. The cubic root of 139876069 is about 519.0961480510.

The spelling of 139876069 in words is "one hundred thirty-nine million, eight hundred seventy-six thousand, sixty-nine".