393428983 has 2 divisors, whose sum is σ = 393428984. Its totient is φ = 393428982.

The previous prime is 393428941. The next prime is 393428999. The reversal of 393428983 is 389824393.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 393428983 - 2¹⁷ = 393297911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393429983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196714491 + 196714492.

It is an arithmetic number, because the mean of its divisors is an integer number (196714492).

Almost surely, 2^393428983 is an apocalyptic number.

393428983 is a deficient number, since it is larger than the sum of its proper divisors (1).

393428983 is an equidigital number, since it uses as much as digits as its factorization.

393428983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 49.

The square root of 393428983 is about 19835.0443155542. The cubic root of 393428983 is about 732.7493638606.

The spelling of 393428983 in words is "three hundred ninety-three million, four hundred twenty-eight thousand, nine hundred eighty-three".