386889953 has 2 divisors, whose sum is σ = 386889954. Its totient is φ = 386889952.

The previous prime is 386889917. The next prime is 386889977. The reversal of 386889953 is 359988683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372991969 + 13897984 = 19313^2 + 3728^2 .

It is a cyclic number.

It is not a de Polignac number, because 386889953 - 2⁸ = 386889697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 386889892 and 386889901.

It is not a weakly prime, because it can be changed into another prime (386885953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193444976 + 193444977.

It is an arithmetic number, because the mean of its divisors is an integer number (193444977).

Almost surely, 2^386889953 is an apocalyptic number.

It is an amenable number.

386889953 is a deficient number, since it is larger than the sum of its proper divisors (1).

386889953 is an equidigital number, since it uses as much as digits as its factorization.

386889953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 59.

The square root of 386889953 is about 19669.5183723446. The cubic root of 386889953 is about 728.6670822929.

The spelling of 386889953 in words is "three hundred eighty-six million, eight hundred eighty-nine thousand, nine hundred fifty-three".