689522438 has 16 divisors (see below), whose sum is σ = 1129904640. Its totient is φ = 312976200.

The previous prime is 689522413. The next prime is 689522447. The reversal of 689522438 is 834225986.

It is a junction number, because it is equal to n+sod(n) for n = 689522392 and 689522401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5978 + ... + 37613.

It is an arithmetic number, because the mean of its divisors is an integer number (70619040).

Almost surely, 2^689522438 is an apocalyptic number.

689522438 is a deficient number, since it is larger than the sum of its proper divisors (440382202).

689522438 is a wasteful number, since it uses less digits than its factorization.

689522438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44323.

The product of its digits is 829440, while the sum is 47.

The square root of 689522438 is about 26258.7592623871. The cubic root of 689522438 is about 883.4516802947.

The spelling of 689522438 in words is "six hundred eighty-nine million, five hundred twenty-two thousand, four hundred thirty-eight".