309420485 has 64 divisors (see below), whose sum is σ = 447897600. Its totient is φ = 202675200.

The previous prime is 309420479. The next prime is 309420497. The reversal of 309420485 is 584024903.

It is not a de Polignac number, because 309420485 - 2⁶ = 309420421 is a prime.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 3916676 + ... + 3916754.

It is an arithmetic number, because the mean of its divisors is an integer number (6998400).

Almost surely, 2^309420485 is an apocalyptic number.

It is an amenable number.

309420485 is a deficient number, since it is larger than the sum of its proper divisors (138477115).

309420485 is a wasteful number, since it uses less digits than its factorization.

309420485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 309420485 is about 17590.3520430945. The cubic root of 309420485 is about 676.3679510400.

The spelling of 309420485 in words is "three hundred nine million, four hundred twenty thousand, four hundred eighty-five".