386938861 has 2 divisors, whose sum is σ = 386938862. Its totient is φ = 386938860.

The previous prime is 386938847. The next prime is 386938873. The reversal of 386938861 is 168839683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220374025 + 166564836 = 14845^2 + 12906^2 .

It is a cyclic number.

It is not a de Polignac number, because 386938861 - 2²⁵ = 353384429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 386938799 and 386938808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386938801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193469430 + 193469431.

It is an arithmetic number, because the mean of its divisors is an integer number (193469431).

Almost surely, 2^386938861 is an apocalyptic number.

It is an amenable number.

386938861 is a deficient number, since it is larger than the sum of its proper divisors (1).

386938861 is an equidigital number, since it uses as much as digits as its factorization.

386938861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 52.

The square root of 386938861 is about 19670.7615765125. The cubic root of 386938861 is about 728.6977853803.

The spelling of 386938861 in words is "three hundred eighty-six million, nine hundred thirty-eight thousand, eight hundred sixty-one".