383870387 has 4 divisors (see below), whose sum is σ = 406451016. Its totient is φ = 361289760.

The previous prime is 383870371. The next prime is 383870407. The reversal of 383870387 is 783078383.

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 383870387 - 2⁴ = 383870371 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 (383870317) 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, 11290289 + ... + 11290322.

It is an arithmetic number, because the mean of its divisors is an integer number (101612754).

Almost surely, 2^383870387 is an apocalyptic number.

383870387 is a deficient number, since it is larger than the sum of its proper divisors (22580629).

383870387 is a wasteful number, since it uses less digits than its factorization.

383870387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22580628.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 383870387 is about 19592.6105202957. The cubic root of 383870387 is about 726.7664493012.

The spelling of 383870387 in words is "three hundred eighty-three million, eight hundred seventy thousand, three hundred eighty-seven".