39680405 has 8 divisors (see below), whose sum is σ = 49686912. Its totient is φ = 30364048.

The previous prime is 39680393. The next prime is 39680413. The reversal of 39680405 is 50408693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39680405 - 2¹² = 39676309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172409 + ... + 172638.

It is an arithmetic number, because the mean of its divisors is an integer number (6210864).

Almost surely, 2^39680405 is an apocalyptic number.

It is an amenable number.

39680405 is a deficient number, since it is larger than the sum of its proper divisors (10006507).

39680405 is a wasteful number, since it uses less digits than its factorization.

39680405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345075.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 39680405 is about 6299.2384460346. The cubic root of 39680405 is about 341.0819197583.

The spelling of 39680405 in words is "thirty-nine million, six hundred eighty thousand, four hundred five".