139370293 has 2 divisors, whose sum is σ = 139370294. Its totient is φ = 139370292.

The previous prime is 139370281. The next prime is 139370303. The reversal of 139370293 is 392073931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137874564 + 1495729 = 11742^2 + 1223^2 .

It is a cyclic number.

It is not a de Polignac number, because 139370293 - 2⁹ = 139369781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139370243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69685146 + 69685147.

It is an arithmetic number, because the mean of its divisors is an integer number (69685147).

Almost surely, 2^139370293 is an apocalyptic number.

It is an amenable number.

139370293 is a deficient number, since it is larger than the sum of its proper divisors (1).

139370293 is an equidigital number, since it uses as much as digits as its factorization.

139370293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 139370293 is about 11805.5195988995. The cubic root of 139370293 is about 518.4697281579.

The spelling of 139370293 in words is "one hundred thirty-nine million, three hundred seventy thousand, two hundred ninety-three".