386481309 has 16 divisors (see below), whose sum is σ = 536008704. Its totient is φ = 247431600.

The previous prime is 386481307. The next prime is 386481311. The reversal of 386481309 is 903184683.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (386481307) and next prime (386481311).

It is not a de Polignac number, because 386481309 - 2¹ = 386481307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386481307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3679 + ... + 28044.

It is an arithmetic number, because the mean of its divisors is an integer number (33500544).

Almost surely, 2^386481309 is an apocalyptic number.

It is an amenable number.

386481309 is a deficient number, since it is larger than the sum of its proper divisors (149527395).

386481309 is a wasteful number, since it uses less digits than its factorization.

386481309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31888.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 386481309 is about 19659.1278799442. The cubic root of 386481309 is about 728.4104457253.

The spelling of 386481309 in words is "three hundred eighty-six million, four hundred eighty-one thousand, three hundred nine".