308980805 has 16 divisors (see below), whose sum is σ = 424030464. Its totient is φ = 211729920.

The previous prime is 308980801. The next prime is 308980807. The reversal of 308980805 is 508089803.

It is not a de Polignac number, because 308980805 - 2² = 308980801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308980801) 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 in 15 ways as a sum of consecutive naturals, for example, 100085 + ... + 103125.

It is an arithmetic number, because the mean of its divisors is an integer number (26501904).

Almost surely, 2^308980805 is an apocalyptic number.

308980805 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

308980805 is a deficient number, since it is larger than the sum of its proper divisors (115049659).

308980805 is a wasteful number, since it uses less digits than its factorization.

308980805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5956.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 308980805 is about 17577.8498400686. The cubic root of 308980805 is about 676.0474309647.

The spelling of 308980805 in words is "three hundred eight million, nine hundred eighty thousand, eight hundred five".