383812147 has 4 divisors (see below), whose sum is σ = 396193216. Its totient is φ = 371431080.

The previous prime is 383812139. The next prime is 383812153. The reversal of 383812147 is 741218383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741218383 = 487 ⋅1522009.

It is a cyclic number.

It is not a de Polignac number, because 383812147 - 2³ = 383812139 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383812157) 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, 6190488 + ... + 6190549.

It is an arithmetic number, because the mean of its divisors is an integer number (99048304).

Almost surely, 2^383812147 is an apocalyptic number.

383812147 is a deficient number, since it is larger than the sum of its proper divisors (12381069).

383812147 is a wasteful number, since it uses less digits than its factorization.

383812147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12381068.

The product of its digits is 32256, while the sum is 37.

The square root of 383812147 is about 19591.1241892853. The cubic root of 383812147 is about 726.7296929547.

The spelling of 383812147 in words is "three hundred eighty-three million, eight hundred twelve thousand, one hundred forty-seven".