139677073 has 2 divisors, whose sum is σ = 139677074. Its totient is φ = 139677072.

The previous prime is 139677071. The next prime is 139677089. The reversal of 139677073 is 370776931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130233744 + 9443329 = 11412^2 + 3073^2 .

It is a cyclic number.

It is not a de Polignac number, because 139677073 - 2¹ = 139677071 is a prime.

Together with 139677071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (139677071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69838536 + 69838537.

It is an arithmetic number, because the mean of its divisors is an integer number (69838537).

Almost surely, 2^139677073 is an apocalyptic number.

It is an amenable number.

139677073 is a deficient number, since it is larger than the sum of its proper divisors (1).

139677073 is an equidigital number, since it uses as much as digits as its factorization.

139677073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 166698, while the sum is 43.

The square root of 139677073 is about 11818.5055315805. The cubic root of 139677073 is about 518.8498655560.

The spelling of 139677073 in words is "one hundred thirty-nine million, six hundred seventy-seven thousand, seventy-three".