39906460 has 48 divisors (see below), whose sum is σ = 96243840. Its totient is φ = 13746240.

The previous prime is 39906457. The next prime is 39906499. The reversal of 39906460 is 6460993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 594 + ... + 8953.

It is an arithmetic number, because the mean of its divisors is an integer number (2005080).

Almost surely, 2^39906460 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 39906460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48121920).

39906460 is an abundant number, since it is smaller than the sum of its proper divisors (56337380).

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

39906460 is a wasteful number, since it uses less digits than its factorization.

39906460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9586 (or 9584 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 39906460 is about 6317.1560056722. The cubic root of 39906460 is about 341.7283960117.

The spelling of 39906460 in words is "thirty-nine million, nine hundred six thousand, four hundred sixty".