383870 has 16 divisors (see below), whose sum is σ = 721440. Its totient is φ = 146784.

The previous prime is 383869. The next prime is 383891. The reversal of 383870 is 78383.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605 + ... + 1064.

It is an arithmetic number, because the mean of its divisors is an integer number (45090).

2³⁸³⁸⁷⁰ is an apocalyptic number.

383870 is a deficient number, since it is larger than the sum of its proper divisors (337570).

383870 is a wasteful number, since it uses less digits than its factorization.

383870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 383870 is about 619.5724332150. The cubic root of 383870 is about 72.6766205071.

The spelling of 383870 in words is "three hundred eighty-three thousand, eight hundred seventy".