383869 has 2 divisors, whose sum is σ = 383870. Its totient is φ = 383868.

The previous prime is 383839. The next prime is 383891. The reversal of 383869 is 968383.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375769 + 8100 = 613^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 383869 - 2⁵ = 383837 is a prime.

It is a super-2 number, since 2×383869² = 294710818322, which contains 22 as substring.

383869 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191934 + 191935.

It is an arithmetic number, because the mean of its divisors is an integer number (191935).

2³⁸³⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

383869 is a deficient number, since it is larger than the sum of its proper divisors (1).

383869 is an equidigital number, since it uses as much as digits as its factorization.

383869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 383869 is about 619.5716262064. The cubic root of 383869 is about 72.6765573983.

The spelling of 383869 in words is "three hundred eighty-three thousand, eight hundred sixty-nine".