385505347 has 2 divisors, whose sum is σ = 385505348. Its totient is φ = 385505346.

The previous prime is 385505321. The next prime is 385505353. The reversal of 385505347 is 743505583.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385505347 is a prime.

It is a super-2 number, since 2×385505347² = 297228745131180818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385505317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192752673 + 192752674.

It is an arithmetic number, because the mean of its divisors is an integer number (192752674).

Almost surely, 2^385505347 is an apocalyptic number.

385505347 is a deficient number, since it is larger than the sum of its proper divisors (1).

385505347 is an equidigital number, since it uses as much as digits as its factorization.

385505347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 385505347 is about 19634.2900813857. The cubic root of 385505347 is about 727.7967893503.

The spelling of 385505347 in words is "three hundred eighty-five million, five hundred five thousand, three hundred forty-seven".