3685440444 has 96 divisors (see below), whose sum is σ = 9917462016. Its totient is φ = 1043435520.

The previous prime is 3685440439. The next prime is 3685440449. The reversal of 3685440444 is 4440445863.

It is an interprime number because it is at equal distance from previous prime (3685440439) and next prime (3685440449).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 3685440396 and 3685440405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685440449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6214612 + ... + 6215204.

It is an arithmetic number, because the mean of its divisors is an integer number (103306896).

Almost surely, 2^3685440444 is an apocalyptic number.

It is an amenable number.

3685440444 is an abundant number, since it is smaller than the sum of its proper divisors (6232021572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3685440444 is a wasteful number, since it uses less digits than its factorization.

3685440444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 42.

The square root of 3685440444 is about 60707.8285231814. The cubic root of 3685440444 is about 1544.6489700093.

The spelling of 3685440444 in words is "three billion, six hundred eighty-five million, four hundred forty thousand, four hundred forty-four".