385362139 has 2 divisors, whose sum is σ = 385362140. Its totient is φ = 385362138.

The previous prime is 385362113. The next prime is 385362143. The reversal of 385362139 is 931263583.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385362139 is a prime.

It is not a weakly prime, because it can be changed into another prime (385372139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192681069 + 192681070.

It is an arithmetic number, because the mean of its divisors is an integer number (192681070).

Almost surely, 2^385362139 is an apocalyptic number.

385362139 is a deficient number, since it is larger than the sum of its proper divisors (1).

385362139 is an equidigital number, since it uses as much as digits as its factorization.

385362139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 385362139 is about 19630.6428575327. The cubic root of 385362139 is about 727.7066572400.

The spelling of 385362139 in words is "three hundred eighty-five million, three hundred sixty-two thousand, one hundred thirty-nine".