386941729 has 4 divisors (see below), whose sum is σ = 389406484. Its totient is φ = 384476976.

The previous prime is 386941699. The next prime is 386941739. The reversal of 386941729 is 927149683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 927149683 = 47 ⋅19726589.

It can be written as a sum of positive squares in 2 ways, for example, as 197824225 + 189117504 = 14065^2 + 13752^2 .

It is a cyclic number.

It is not a de Polignac number, because 386941729 - 2²⁵ = 353387297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386941739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1232142 + ... + 1232455.

It is an arithmetic number, because the mean of its divisors is an integer number (97351621).

Almost surely, 2^386941729 is an apocalyptic number.

It is an amenable number.

386941729 is a deficient number, since it is larger than the sum of its proper divisors (2464755).

386941729 is a wasteful number, since it uses less digits than its factorization.

386941729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464754.

The product of its digits is 653184, while the sum is 49.

The square root of 386941729 is about 19670.8344764527. The cubic root of 386941729 is about 728.6995857509.

The spelling of 386941729 in words is "three hundred eighty-six million, nine hundred forty-one thousand, seven hundred twenty-nine".