39489946 has 16 divisors (see below), whose sum is σ = 62861184. Its totient is φ = 18541504.

The previous prime is 39489941. The next prime is 39489949. The reversal of 39489946 is 64998493.

It is a junction number, because it is equal to n+sod(n) for n = 39489893 and 39489902.

It is not an unprimeable number, because it can be changed into a prime (39489941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18111 + ... + 20173.

It is an arithmetic number, because the mean of its divisors is an integer number (3928824).

Almost surely, 2^39489946 is an apocalyptic number.

39489946 is a deficient number, since it is larger than the sum of its proper divisors (23371238).

39489946 is a wasteful number, since it uses less digits than its factorization.

39489946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645.

The product of its digits is 1679616, while the sum is 52.

The square root of 39489946 is about 6284.1026407913. The cubic root of 39489946 is about 340.5353331412.

The spelling of 39489946 in words is "thirty-nine million, four hundred eighty-nine thousand, nine hundred forty-six".