385312947 has 8 divisors (see below), whose sum is σ = 514388880. Its totient is φ = 256556160.

The previous prime is 385312943. The next prime is 385312979. The reversal of 385312947 is 749213583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 385312947 - 2² = 385312943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 385312899 and 385312908.

It is not an unprimeable number, because it can be changed into a prime (385312943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76954 + ... + 81807.

It is an arithmetic number, because the mean of its divisors is an integer number (64298610).

Almost surely, 2^385312947 is an apocalyptic number.

385312947 is a deficient number, since it is larger than the sum of its proper divisors (129075933).

385312947 is a wasteful number, since it uses less digits than its factorization.

385312947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159573.

The product of its digits is 181440, while the sum is 42.

The square root of 385312947 is about 19629.3898784450. The cubic root of 385312947 is about 727.6756916749.

The spelling of 385312947 in words is "three hundred eighty-five million, three hundred twelve thousand, nine hundred forty-seven".