383878983 has 32 divisors (see below), whose sum is σ = 562636800. Its totient is φ = 231897600.

The previous prime is 383878961. The next prime is 383878987. The reversal of 383878983 is 389878383.

It is not a de Polignac number, because 383878983 - 2⁶ = 383878919 is a prime.

It is a super-2 number, since 2×383878983² = 294726147178228578, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383878987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156043 + ... + 158483.

It is an arithmetic number, because the mean of its divisors is an integer number (17582400).

Almost surely, 2^383878983 is an apocalyptic number.

383878983 is a deficient number, since it is larger than the sum of its proper divisors (178757817).

383878983 is a wasteful number, since it uses less digits than its factorization.

383878983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583.

The product of its digits is 6967296, while the sum is 57.

The square root of 383878983 is about 19592.8298874869. The cubic root of 383878983 is about 726.7718740817.

The spelling of 383878983 in words is "three hundred eighty-three million, eight hundred seventy-eight thousand, nine hundred eighty-three".