39993407 has 8 divisors (see below), whose sum is σ = 41651040. Its totient is φ = 38354400.

The previous prime is 39993403. The next prime is 39993419. The reversal of 39993407 is 70439993.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 39993407 - 2² = 39993403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39993403) 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 7 ways as a sum of consecutive naturals, for example, 188 + ... + 8945.

It is an arithmetic number, because the mean of its divisors is an integer number (5206380).

Almost surely, 2^39993407 is an apocalyptic number.

39993407 is a deficient number, since it is larger than the sum of its proper divisors (1657633).

39993407 is a wasteful number, since it uses less digits than its factorization.

39993407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9313.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 39993407 is about 6324.0340764420. The cubic root of 39993407 is about 341.9763985172.

The spelling of 39993407 in words is "thirty-nine million, nine hundred ninety-three thousand, four hundred seven".