386979091 has 2 divisors, whose sum is σ = 386979092. Its totient is φ = 386979090.

The previous prime is 386979079. The next prime is 386979119. The reversal of 386979091 is 190979683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 386979091 - 2¹⁵ = 386946323 is a prime.

It is a super-3 number, since 3×386979091³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (386979391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193489545 + 193489546.

It is an arithmetic number, because the mean of its divisors is an integer number (193489546).

Almost surely, 2^386979091 is an apocalyptic number.

386979091 is a deficient number, since it is larger than the sum of its proper divisors (1).

386979091 is an equidigital number, since it uses as much as digits as its factorization.

386979091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 386979091 is about 19671.7841336265. The cubic root of 386979091 is about 728.7230387204.

The spelling of 386979091 in words is "three hundred eighty-six million, nine hundred seventy-nine thousand, ninety-one".