385671047 has 2 divisors, whose sum is σ = 385671048. Its totient is φ = 385671046.

The previous prime is 385671019. The next prime is 385671053. The reversal of 385671047 is 740176583.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385671047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385670995 and 385671013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385671007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192835523 + 192835524.

It is an arithmetic number, because the mean of its divisors is an integer number (192835524).

Almost surely, 2^385671047 is an apocalyptic number.

385671047 is a deficient number, since it is larger than the sum of its proper divisors (1).

385671047 is an equidigital number, since it uses as much as digits as its factorization.

385671047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 385671047 is about 19638.5092866032. The cubic root of 385671047 is about 727.9010496021.

The spelling of 385671047 in words is "three hundred eighty-five million, six hundred seventy-one thousand, forty-seven".