385470856 has 8 divisors (see below), whose sum is σ = 722757870. Its totient is φ = 192735424.

The previous prime is 385470821. The next prime is 385470859. The reversal of 385470856 is 658074583.

It can be written as a sum of positive squares in only one way, i.e., 385336900 + 133956 = 19630^2 + 366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (385470859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24091921 + ... + 24091936.

Almost surely, 2^385470856 is an apocalyptic number.

385470856 is the 10495-th centered heptagonal number.

It is an amenable number.

385470856 is a deficient number, since it is larger than the sum of its proper divisors (337287014).

385470856 is a wasteful number, since it uses less digits than its factorization.

385470856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48183863 (or 48183859 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 385470856 is about 19633.4117259329. The cubic root of 385470856 is about 727.7750834795.

The spelling of 385470856 in words is "three hundred eighty-five million, four hundred seventy thousand, eight hundred fifty-six".