366664399 has 2 divisors, whose sum is σ = 366664400. Its totient is φ = 366664398.

The previous prime is 366664387. The next prime is 366664421. The reversal of 366664399 is 993466663.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 366664399 - 2⁹ = 366663887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (366664349) 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 as a sum of consecutive naturals, namely, 183332199 + 183332200.

It is an arithmetic number, because the mean of its divisors is an integer number (183332200).

Almost surely, 2^366664399 is an apocalyptic number.

366664399 is a deficient number, since it is larger than the sum of its proper divisors (1).

366664399 is an equidigital number, since it uses as much as digits as its factorization.

366664399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 52.

The square root of 366664399 is about 19148.4829425205. The cubic root of 366664399 is about 715.7415808215.

The spelling of 366664399 in words is "three hundred sixty-six million, six hundred sixty-four thousand, three hundred ninety-nine".