39420393 has 16 divisors (see below), whose sum is σ = 54867456. Its totient is φ = 25151360.

The previous prime is 39420391. The next prime is 39420431. The reversal of 39420393 is 39302493.

It is a cyclic number.

It is not a de Polignac number, because 39420393 - 2¹ = 39420391 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (39420391) 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, 3496 + ... + 9542.

It is an arithmetic number, because the mean of its divisors is an integer number (3429216).

Almost surely, 2^39420393 is an apocalyptic number.

It is an amenable number.

39420393 is a deficient number, since it is larger than the sum of its proper divisors (15447063).

39420393 is a wasteful number, since it uses less digits than its factorization.

39420393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6144.

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 39420393 is about 6278.5661579695. The cubic root of 39420393 is about 340.3352892015.

The spelling of 39420393 in words is "thirty-nine million, four hundred twenty thousand, three hundred ninety-three".