389261 has 4 divisors (see below), whose sum is σ = 393372. Its totient is φ = 385152.

The previous prime is 389231. The next prime is 389269. The reversal of 389261 is 162983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162983 = 349 ⋅467.

It can be written as a sum of positive squares in 2 ways, for example, as 256036 + 133225 = 506^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 389261 - 2¹⁰ = 388237 is a prime.

It is a super-2 number, since 2×389261² = 303048252242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389261.

It is not an unprimeable number, because it can be changed into a prime (389269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1910 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (98343).

2³⁸⁹²⁶¹ is an apocalyptic number.

It is an amenable number.

389261 is a deficient number, since it is larger than the sum of its proper divisors (4111).

389261 is an equidigital number, since it uses as much as digits as its factorization.

389261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4110.

The product of its digits is 2592, while the sum is 29.

The square root of 389261 is about 623.9078457593. The cubic root of 389261 is about 73.0152592108.

The spelling of 389261 in words is "three hundred eighty-nine thousand, two hundred sixty-one".