38984309 has 32 divisors (see below), whose sum is σ = 50077440. Its totient is φ = 29532672.

The previous prime is 38984303. The next prime is 38984311. The reversal of 38984309 is 90348983.

It is not a de Polignac number, because 38984309 - 2⁴ = 38984293 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38984309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38984303) 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, 284489 + ... + 284625.

It is an arithmetic number, because the mean of its divisors is an integer number (1564920).

Almost surely, 2^38984309 is an apocalyptic number.

It is an amenable number.

38984309 is a deficient number, since it is larger than the sum of its proper divisors (11093131).

38984309 is a wasteful number, since it uses less digits than its factorization.

38984309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 38984309 is about 6243.7415865809. The cubic root of 38984309 is about 339.0756582872.

It can be divided in two parts, 38984 and 309, that added together give a palindrome (39293).

The spelling of 38984309 in words is "thirty-eight million, nine hundred eighty-four thousand, three hundred nine".