399060139 has 2 divisors, whose sum is σ = 399060140. Its totient is φ = 399060138.

The previous prime is 399060119. The next prime is 399060187. The reversal of 399060139 is 931060993.

It is a weak prime.

It is an emirp because it is prime and its reverse (931060993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 399060139 - 2⁹ = 399059627 is a prime.

It is not a weakly prime, because it can be changed into another prime (399060119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199530069 + 199530070.

It is an arithmetic number, because the mean of its divisors is an integer number (199530070).

Almost surely, 2^399060139 is an apocalyptic number.

399060139 is a deficient number, since it is larger than the sum of its proper divisors (1).

399060139 is an equidigital number, since it uses as much as digits as its factorization.

399060139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39366, while the sum is 40.

The square root of 399060139 is about 19976.4896565938. The cubic root of 399060139 is about 736.2287675703.

The spelling of 399060139 in words is "three hundred ninety-nine million, sixty thousand, one hundred thirty-nine".