385077647 has 4 divisors (see below), whose sum is σ = 385151376. Its totient is φ = 385003920.

The previous prime is 385077643. The next prime is 385077703. The reversal of 385077647 is 746770583.

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 385077647 - 2² = 385077643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385077643) 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, 28379 + ... + 39692.

It is an arithmetic number, because the mean of its divisors is an integer number (96287844).

Almost surely, 2^385077647 is an apocalyptic number.

385077647 is a deficient number, since it is larger than the sum of its proper divisors (73729).

385077647 is an equidigital number, since it uses as much as digits as its factorization.

385077647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73728.

The product of its (nonzero) digits is 987840, while the sum is 47.

The square root of 385077647 is about 19623.3953993696. The cubic root of 385077647 is about 727.5275376814.

The spelling of 385077647 in words is "three hundred eighty-five million, seventy-seven thousand, six hundred forty-seven".