385555547 has 4 divisors (see below), whose sum is σ = 415213680. Its totient is φ = 355897416.

The previous prime is 385555537. The next prime is 385555567. The reversal of 385555547 is 745555583.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 385555547 - 2⁴ = 385555531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385555537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14829047 + ... + 14829072.

It is an arithmetic number, because the mean of its divisors is an integer number (103803420).

Almost surely, 2^385555547 is an apocalyptic number.

385555547 is a deficient number, since it is larger than the sum of its proper divisors (29658133).

385555547 is a wasteful number, since it uses less digits than its factorization.

385555547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29658132.

The product of its digits is 2100000, while the sum is 47.

The square root of 385555547 is about 19635.5684155056. The cubic root of 385555547 is about 727.8283788932.

The spelling of 385555547 in words is "three hundred eighty-five million, five hundred fifty-five thousand, five hundred forty-seven".