289328629 has 4 divisors (see below), whose sum is σ = 289533376. Its totient is φ = 289123884.

The previous prime is 289328623. The next prime is 289328653. The reversal of 289328629 is 926823982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289328629 is a prime.

It is a super-2 number, since 2×289328629² = 167422111118039282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289328623) 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, 100239 + ... + 103084.

It is an arithmetic number, because the mean of its divisors is an integer number (72383344).

Almost surely, 2^289328629 is an apocalyptic number.

It is an amenable number.

289328629 is a deficient number, since it is larger than the sum of its proper divisors (204747).

289328629 is a wasteful number, since it uses less digits than its factorization.

289328629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204746.

The product of its digits is 746496, while the sum is 49.

The square root of 289328629 is about 17009.6628126486. The cubic root of 289328629 is about 661.3994098032.

The spelling of 289328629 in words is "two hundred eighty-nine million, three hundred twenty-eight thousand, six hundred twenty-nine".