393388087 has 2 divisors, whose sum is σ = 393388088. Its totient is φ = 393388086.

The previous prime is 393388013. The next prime is 393388091. The reversal of 393388087 is 780883393.

It is a strong prime.

It is an emirp because it is prime and its reverse (780883393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 393388087 - 2¹⁹ = 392863799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 393388087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393388097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196694043 + 196694044.

It is an arithmetic number, because the mean of its divisors is an integer number (196694044).

Almost surely, 2^393388087 is an apocalyptic number.

393388087 is a deficient number, since it is larger than the sum of its proper divisors (1).

393388087 is an equidigital number, since it uses as much as digits as its factorization.

393388087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 393388087 is about 19834.0133861002. The cubic root of 393388087 is about 732.7239738007.

The spelling of 393388087 in words is "three hundred ninety-three million, three hundred eighty-eight thousand, eighty-seven".