385852769 has 2 divisors, whose sum is σ = 385852770. Its totient is φ = 385852768.

The previous prime is 385852639. The next prime is 385852783. The reversal of 385852769 is 967258583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291043600 + 94809169 = 17060^2 + 9737^2 .

It is a cyclic number.

It is not a de Polignac number, because 385852769 - 2²⁰ = 384804193 is a prime.

It is a super-2 number, since 2×385852769² = 297764718689934722, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 385852769.

It is not a weakly prime, because it can be changed into another prime (385851769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192926384 + 192926385.

It is an arithmetic number, because the mean of its divisors is an integer number (192926385).

Almost surely, 2^385852769 is an apocalyptic number.

It is an amenable number.

385852769 is a deficient number, since it is larger than the sum of its proper divisors (1).

385852769 is an equidigital number, since it uses as much as digits as its factorization.

385852769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 53.

The square root of 385852769 is about 19643.1354167302. The cubic root of 385852769 is about 728.0153567434.

The spelling of 385852769 in words is "three hundred eighty-five million, eight hundred fifty-two thousand, seven hundred sixty-nine".