308494069 has 8 divisors (see below), whose sum is σ = 333427640. Its totient is φ = 283732416.

The previous prime is 308494061. The next prime is 308494091. The reversal of 308494069 is 960494803.

It can be written as a sum of positive squares in 4 ways, for example, as 70225 + 308423844 = 265^2 + 17562^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 308494069 - 2³ = 308494061 is a prime.

It is a super-2 number, since 2×308494069² = 190337181216353522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308494061) 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 7 ways as a sum of consecutive naturals, for example, 39234 + ... + 46435.

It is an arithmetic number, because the mean of its divisors is an integer number (41678455).

Almost surely, 2^308494069 is an apocalyptic number.

It is an amenable number.

308494069 is a deficient number, since it is larger than the sum of its proper divisors (24933571).

308494069 is a wasteful number, since it uses less digits than its factorization.

308494069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85959.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 308494069 is about 17563.9992313824. Note that the first 3 decimals coincide. The cubic root of 308494069 is about 675.6922529563.

The spelling of 308494069 in words is "three hundred eight million, four hundred ninety-four thousand, sixty-nine".