689053239 has 36 divisors (see below), whose sum is σ = 1160406000. Its totient is φ = 392857920.

The previous prime is 689053223. The next prime is 689053241. The reversal of 689053239 is 932350986.

689053239 is a `hidden beast` number, since 6 + 89 + 0 + 532 + 39 = 666.

It is not a de Polignac number, because 689053239 - 2⁴ = 689053223 is a prime.

It is a super-2 number, since 2×689053239² = 949588732352782242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 689053194 and 689053203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689053249) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 228262 + ... + 231260.

It is an arithmetic number, because the mean of its divisors is an integer number (32233500).

Almost surely, 2^689053239 is an apocalyptic number.

689053239 is a deficient number, since it is larger than the sum of its proper divisors (471352761).

689053239 is a wasteful number, since it uses less digits than its factorization.

689053239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540 (or 3530 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 689053239 is about 26249.8235994073. The cubic root of 689053239 is about 883.2512475124.

The spelling of 689053239 in words is "six hundred eighty-nine million, fifty-three thousand, two hundred thirty-nine".