39490880 has 112 divisors (see below), whose sum is σ = 110605824. Its totient is φ = 13240320.

The previous prime is 39490853. The next prime is 39490889. The reversal of 39490880 is 8809493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39490889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45329 + ... + 46191.

It is an arithmetic number, because the mean of its divisors is an integer number (987552).

Almost surely, 2^39490880 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 39490880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55302912).

39490880 is an abundant number, since it is smaller than the sum of its proper divisors (71114944).

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

39490880 is a wasteful number, since it uses less digits than its factorization.

39490880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 39490880 is about 6284.1769548605. The cubic root of 39490880 is about 340.5380178541.

The spelling of 39490880 in words is "thirty-nine million, four hundred ninety thousand, eight hundred eighty".