383969 has 2 divisors, whose sum is σ = 383970. Its totient is φ = 383968.

The previous prime is 383963. The next prime is 383983. The reversal of 383969 is 969383.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270400 + 113569 = 520^2 + 337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-383969 is a prime.

It is a super-2 number, since 2×383969² = 294864385922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (383963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191984 + 191985.

It is an arithmetic number, because the mean of its divisors is an integer number (191985).

2³⁸³⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

383969 is a deficient number, since it is larger than the sum of its proper divisors (1).

383969 is an equidigital number, since it uses as much as digits as its factorization.

383969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The square root of 383969 is about 619.6523218709. The cubic root of 383969 is about 72.6828677322.

The spelling of 383969 in words is "three hundred eighty-three thousand, nine hundred sixty-nine".