39491672 has 16 divisors (see below), whose sum is σ = 80778600. Its totient is φ = 17950720.

The previous prime is 39491603. The next prime is 39491677. The reversal of 39491672 is 27619493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39491677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224297 + ... + 224472.

Almost surely, 2^39491672 is an apocalyptic number.

It is an amenable number.

39491672 is an abundant number, since it is smaller than the sum of its proper divisors (41286928).

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

39491672 is a wasteful number, since it uses less digits than its factorization.

39491672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448786 (or 448782 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 39491672 is about 6284.2399699566. The cubic root of 39491672 is about 340.5402943654.

The spelling of 39491672 in words is "thirty-nine million, four hundred ninety-one thousand, six hundred seventy-two".