39855444 has 48 divisors (see below), whose sum is σ = 96949440. Its totient is φ = 12732160.

The previous prime is 39855443. The next prime is 39855449. The reversal of 39855444 is 44455893.

It is a junction number, because it is equal to n+sod(n) for n = 39855396 and 39855405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39855443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28342 + ... + 29714.

It is an arithmetic number, because the mean of its divisors is an integer number (2019780).

Almost surely, 2^39855444 is an apocalyptic number.

It is an amenable number.

39855444 is an abundant number, since it is smaller than the sum of its proper divisors (57093996).

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

39855444 is a wasteful number, since it uses less digits than its factorization.

39855444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480 (or 1478 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 39855444 is about 6313.1168213490. The cubic root of 39855444 is about 341.5827132482.

The spelling of 39855444 in words is "thirty-nine million, eight hundred fifty-five thousand, four hundred forty-four".