39494784 has 96 divisors (see below), whose sum is σ = 122094000. Its totient is φ = 11278848.

The previous prime is 39494783. The next prime is 39494809. The reversal of 39494784 is 48749493.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (39494783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17767 + ... + 19865.

Almost surely, 2^39494784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39494784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61047000).

39494784 is an abundant number, since it is smaller than the sum of its proper divisors (82599216).

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

39494784 is a wasteful number, since it uses less digits than its factorization.

39494784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130 (or 2111 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 39494784 is about 6284.4875686089. The cubic root of 39494784 is about 340.5492391505.

The spelling of 39494784 in words is "thirty-nine million, four hundred ninety-four thousand, seven hundred eighty-four".