689500000444 has 12 divisors (see below), whose sum is σ = 1206631742904. Its totient is φ = 344748073904.

The previous prime is 689500000429. The next prime is 689500000451. The reversal of 689500000444 is 444000005986.

It is a super-2 number, since 2×689500000444² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 689500000397 and 689500000406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587454 + ... + 1313050.

It is an arithmetic number, because the mean of its divisors is an integer number (100552645242).

Almost surely, 2^689500000444 is an apocalyptic number.

It is an amenable number.

689500000444 is a deficient number, since it is larger than the sum of its proper divisors (517131742460).

689500000444 is a wasteful number, since it uses less digits than its factorization.

689500000444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963164 (or 963162 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 689500000444 in words is "six hundred eighty-nine billion, five hundred million, four hundred forty-four", and thus it is an aban number.