393940095 has 32 divisors (see below), whose sum is σ = 666537984. Its totient is φ = 198355200.

The previous prime is 393940093. The next prime is 393940111. The reversal of 393940095 is 590049393.

It is a happy number.

It is not a de Polignac number, because 393940095 - 2¹ = 393940093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393940093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8734 + ... + 29396.

It is an arithmetic number, because the mean of its divisors is an integer number (20829312).

Almost surely, 2^393940095 is an apocalyptic number.

393940095 is a deficient number, since it is larger than the sum of its proper divisors (272597889).

393940095 is a wasteful number, since it uses less digits than its factorization.

393940095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20743.

The product of its (nonzero) digits is 131220, while the sum is 42.

The square root of 393940095 is about 19847.9241987670. The cubic root of 393940095 is about 733.0665366711.

The spelling of 393940095 in words is "three hundred ninety-three million, nine hundred forty thousand, ninety-five".