389629553 has 8 divisors (see below), whose sum is σ = 398471400. Its totient is φ = 380843008.

The previous prime is 389629549. The next prime is 389629567. The reversal of 389629553 is 355926983.

It can be written as a sum of positive squares in 4 ways, for example, as 20720704 + 368908849 = 4552^2 + 19207^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 389629553 - 2² = 389629549 is a prime.

It is a super-2 number, since 2×389629553² = 303622377141959618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389629853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593 + ... + 27921.

It is an arithmetic number, because the mean of its divisors is an integer number (49808925).

Almost surely, 2^389629553 is an apocalyptic number.

It is an amenable number.

389629553 is a deficient number, since it is larger than the sum of its proper divisors (8841847).

389629553 is a wasteful number, since it uses less digits than its factorization.

389629553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27651.

The product of its digits is 1749600, while the sum is 50.

The square root of 389629553 is about 19739.0362733341. The cubic root of 389629553 is about 730.3829560072.

The spelling of 389629553 in words is "three hundred eighty-nine million, six hundred twenty-nine thousand, five hundred fifty-three".