689429486 has 4 divisors (see below), whose sum is σ = 1034144232. Its totient is φ = 344714742.

The previous prime is 689429479. The next prime is 689429513. The reversal of 689429486 is 684924986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 684924986 = 2 ⋅342462493.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172357370 + ... + 172357373.

It is an arithmetic number, because the mean of its divisors is an integer number (258536058).

Almost surely, 2^689429486 is an apocalyptic number.

689429486 is a deficient number, since it is larger than the sum of its proper divisors (344714746).

689429486 is a wasteful number, since it uses less digits than its factorization.

689429486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344714745.

The product of its digits is 5971968, while the sum is 56.

The square root of 689429486 is about 26256.9892790472. The cubic root of 689429486 is about 883.4119802132.

The spelling of 689429486 in words is "six hundred eighty-nine million, four hundred twenty-nine thousand, four hundred eighty-six".