139803253 has 2 divisors, whose sum is σ = 139803254. Its totient is φ = 139803252.

The previous prime is 139803233. The next prime is 139803263. The reversal of 139803253 is 352308931.

139803253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138462289 + 1340964 = 11767^2 + 1158^2 .

It is a cyclic number.

It is not a de Polignac number, because 139803253 - 2⁵ = 139803221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139803233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69901626 + 69901627.

It is an arithmetic number, because the mean of its divisors is an integer number (69901627).

Almost surely, 2^139803253 is an apocalyptic number.

It is an amenable number.

139803253 is a deficient number, since it is larger than the sum of its proper divisors (1).

139803253 is an equidigital number, since it uses as much as digits as its factorization.

139803253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 139803253 is about 11823.8425649194. The cubic root of 139803253 is about 519.0060562379.

The spelling of 139803253 in words is "one hundred thirty-nine million, eight hundred three thousand, two hundred fifty-three".