139798339 has 2 divisors, whose sum is σ = 139798340. Its totient is φ = 139798338.

The previous prime is 139798303. The next prime is 139798349. The reversal of 139798339 is 933897931.

It is a strong prime.

It is an emirp because it is prime and its reverse (933897931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139798339 - 2¹¹ = 139796291 is a prime.

It is not a weakly prime, because it can be changed into another prime (139798349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69899169 + 69899170.

It is an arithmetic number, because the mean of its divisors is an integer number (69899170).

Almost surely, 2^139798339 is an apocalyptic number.

139798339 is a deficient number, since it is larger than the sum of its proper divisors (1).

139798339 is an equidigital number, since it uses as much as digits as its factorization.

139798339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 52.

The square root of 139798339 is about 11823.6347626269. The cubic root of 139798339 is about 518.9999752501. Note that the first 4 decimals are identical.

The spelling of 139798339 in words is "one hundred thirty-nine million, seven hundred ninety-eight thousand, three hundred thirty-nine".