308679669 has 12 divisors (see below), whose sum is σ = 447021900. Its totient is φ = 205255104.

The previous prime is 308679649. The next prime is 308679673. The reversal of 308679669 is 966976803.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 113742225 + 194937444 = 10665^2 + 13962^2 .

It is not a de Polignac number, because 308679669 - 2⁹ = 308679157 is a prime.

It is a super-2 number, since 2×308679669² = 190566276107899122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308679649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40584 + ... + 47585.

It is an arithmetic number, because the mean of its divisors is an integer number (37251825).

Almost surely, 2^308679669 is an apocalyptic number.

It is an amenable number.

308679669 is a deficient number, since it is larger than the sum of its proper divisors (138342231).

308679669 is a wasteful number, since it uses less digits than its factorization.

308679669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88564 (or 88561 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The square root of 308679669 is about 17569.2819716686. The cubic root of 308679669 is about 675.8277318879.

The spelling of 308679669 in words is "three hundred eight million, six hundred seventy-nine thousand, six hundred sixty-nine".