393323377 has 2 divisors, whose sum is σ = 393323378. Its totient is φ = 393323376.

The previous prime is 393323347. The next prime is 393323387. The reversal of 393323377 is 773323393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308388721 + 84934656 = 17561^2 + 9216^2 .

It is a cyclic number.

It is not a de Polignac number, because 393323377 - 2¹⁵ = 393290609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (393323347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196661688 + 196661689.

It is an arithmetic number, because the mean of its divisors is an integer number (196661689).

Almost surely, 2^393323377 is an apocalyptic number.

It is an amenable number.

393323377 is a deficient number, since it is larger than the sum of its proper divisors (1).

393323377 is an equidigital number, since it uses as much as digits as its factorization.

393323377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 40.

The square root of 393323377 is about 19832.3820304067. The cubic root of 393323377 is about 732.6837953527.

The spelling of 393323377 in words is "three hundred ninety-three million, three hundred twenty-three thousand, three hundred seventy-seven".