383712881 has 2 divisors, whose sum is σ = 383712882. Its totient is φ = 383712880.

The previous prime is 383712871. The next prime is 383712907. The reversal of 383712881 is 188217383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354983281 + 28729600 = 18841^2 + 5360^2 .

It is a cyclic number.

It is not a de Polignac number, because 383712881 - 2¹⁰ = 383711857 is a prime.

It is a super-2 number, since 2×383712881² = 294471150090640322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (383712871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191856440 + 191856441.

It is an arithmetic number, because the mean of its divisors is an integer number (191856441).

Almost surely, 2^383712881 is an apocalyptic number.

It is an amenable number.

383712881 is a deficient number, since it is larger than the sum of its proper divisors (1).

383712881 is an equidigital number, since it uses as much as digits as its factorization.

383712881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 41.

The square root of 383712881 is about 19588.5905822752. The cubic root of 383712881 is about 726.6670357665.

The spelling of 383712881 in words is "three hundred eighty-three million, seven hundred twelve thousand, eight hundred eighty-one".