386618497 has 4 divisors (see below), whose sum is σ = 388853460. Its totient is φ = 384383536.

The previous prime is 386618489. The next prime is 386618503. The reversal of 386618497 is 794816683.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 794816683 = 19 ⋅41832457.

It can be written as a sum of positive squares in 2 ways, for example, as 269091216 + 117527281 = 16404^2 + 10841^2 .

It is a cyclic number.

It is not a de Polignac number, because 386618497 - 2³ = 386618489 is a prime.

It is a super-3 number, since 3×386618497³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386618417) 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, 1117222 + ... + 1117567.

It is an arithmetic number, because the mean of its divisors is an integer number (97213365).

Almost surely, 2^386618497 is an apocalyptic number.

It is an amenable number.

386618497 is a deficient number, since it is larger than the sum of its proper divisors (2234963).

386618497 is a wasteful number, since it uses less digits than its factorization.

386618497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234962.

The product of its digits is 1741824, while the sum is 52.

The square root of 386618497 is about 19662.6167383693. The cubic root of 386618497 is about 728.4966226834.

The spelling of 386618497 in words is "three hundred eighty-six million, six hundred eighteen thousand, four hundred ninety-seven".