84309444 has 48 divisors (see below), whose sum is σ = 228090240. Its totient is φ = 26880480.

The previous prime is 84309439. The next prime is 84309451. The reversal of 84309444 is 44490348.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 84309399 and 84309408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14487 + ... + 19454.

It is an arithmetic number, because the mean of its divisors is an integer number (4751880).

Almost surely, 2^84309444 is an apocalyptic number.

It is an amenable number.

84309444 is an abundant number, since it is smaller than the sum of its proper divisors (143780796).

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

84309444 is a wasteful number, since it uses less digits than its factorization.

84309444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33977 (or 33969 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 84309444 is about 9182.0174253810. The cubic root of 84309444 is about 438.4890390593.

The spelling of 84309444 in words is "eighty-four million, three hundred nine thousand, four hundred forty-four".