139412093 has 2 divisors, whose sum is σ = 139412094. Its totient is φ = 139412092.

The previous prime is 139412089. The next prime is 139412123. The reversal of 139412093 is 390214931.

139412093 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., 130005604 + 9406489 = 11402^2 + 3067^2 .

It is an emirp because it is prime and its reverse (390214931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139412093 - 2² = 139412089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139412033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69706046 + 69706047.

It is an arithmetic number, because the mean of its divisors is an integer number (69706047).

Almost surely, 2^139412093 is an apocalyptic number.

It is an amenable number.

139412093 is a deficient number, since it is larger than the sum of its proper divisors (1).

139412093 is an equidigital number, since it uses as much as digits as its factorization.

139412093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 139412093 is about 11807.2898245110. The cubic root of 139412093 is about 518.5215562003.

The spelling of 139412093 in words is "one hundred thirty-nine million, four hundred twelve thousand, ninety-three".