139253399 has 2 divisors, whose sum is σ = 139253400. Its totient is φ = 139253398.

The previous prime is 139253383. The next prime is 139253407. The reversal of 139253399 is 993352931.

139253399 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 is an emirp because it is prime and its reverse (993352931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139253399 - 2⁴ = 139253383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139253369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69626699 + 69626700.

It is an arithmetic number, because the mean of its divisors is an integer number (69626700).

Almost surely, 2^139253399 is an apocalyptic number.

139253399 is a deficient number, since it is larger than the sum of its proper divisors (1).

139253399 is an equidigital number, since it uses as much as digits as its factorization.

139253399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 196830, while the sum is 44.

The square root of 139253399 is about 11800.5677405793. The cubic root of 139253399 is about 518.3247356323.

The spelling of 139253399 in words is "one hundred thirty-nine million, two hundred fifty-three thousand, three hundred ninety-nine".