389786049 has 9 divisors (see below), whose sum is σ = 563109859. Its totient is φ = 259817880.

The previous prime is 389786039. The next prime is 389786077. The reversal of 389786049 is 940687983.

The square root of 389786049 is 19743.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 93257649 + 296528400 = 9657^2 + 17220^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 389786049 - 2⁵ = 389786017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389785986 and 389786004.

It is not an unprimeable number, because it can be changed into a prime (389786029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 55939 + ... + 62519.

Almost surely, 2^389786049 is an apocalyptic number.

389786049 is the 19743-rd square number.

389786049 is the 9872-nd centered octagonal number.

It is an amenable number.

389786049 is a deficient number, since it is larger than the sum of its proper divisors (173323810).

389786049 is an frugal number, since it uses more digits than its factorization.

389786049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13168 (or 6584 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The cubic root of 389786049 is about 730.4807298288.

The spelling of 389786049 in words is "three hundred eighty-nine million, seven hundred eighty-six thousand, forty-nine".