308438869 has 8 divisors (see below), whose sum is σ = 310951872. Its totient is φ = 305933760.

The previous prime is 308438861. The next prime is 308438881. The reversal of 308438869 is 968834803.

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 308438869 - 2³ = 308438861 is a prime.

It is a super-2 number, since 2×308438869² = 190269071819998322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308438861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95064 + ... + 98254.

It is an arithmetic number, because the mean of its divisors is an integer number (38868984).

Almost surely, 2^308438869 is an apocalyptic number.

It is an amenable number.

308438869 is a deficient number, since it is larger than the sum of its proper divisors (2513003).

308438869 is a wasteful number, since it uses less digits than its factorization.

308438869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947.

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 308438869 is about 17562.4277649760. The cubic root of 308438869 is about 675.6519491698.

The spelling of 308438869 in words is "three hundred eight million, four hundred thirty-eight thousand, eight hundred sixty-nine".