386262749 has 4 divisors (see below), whose sum is σ = 387698940. Its totient is φ = 384826560.

The previous prime is 386262733. The next prime is 386262787. The reversal of 386262749 is 947262683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947262683 = 67 ⋅14138249.

It can be written as a sum of positive squares in 2 ways, for example, as 83850649 + 302412100 = 9157^2 + 17390^2 .

It is a cyclic number.

It is not a de Polignac number, because 386262749 - 2⁴ = 386262733 is a prime.

It is a super-2 number, since 2×386262749² = 298397822530074002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386262949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717692 + ... + 718229.

It is an arithmetic number, because the mean of its divisors is an integer number (96924735).

Almost surely, 2^386262749 is an apocalyptic number.

It is an amenable number.

386262749 is a deficient number, since it is larger than the sum of its proper divisors (1436191).

386262749 is a wasteful number, since it uses less digits than its factorization.

386262749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436190.

The product of its digits is 870912, while the sum is 47.

The square root of 386262749 is about 19653.5683528463. The cubic root of 386262749 is about 728.2731114369.

The spelling of 386262749 in words is "three hundred eighty-six million, two hundred sixty-two thousand, seven hundred forty-nine".