319485440 has 40 divisors (see below), whose sum is σ = 766022400. Its totient is φ = 127793152.

The previous prime is 319485427. The next prime is 319485443. The reversal of 319485440 is 44584913.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 319485394 and 319485403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319485443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59840 + ... + 64959.

It is an arithmetic number, because the mean of its divisors is an integer number (19150560).

Almost surely, 2^319485440 is an apocalyptic number.

It is an amenable number.

319485440 is an abundant number, since it is smaller than the sum of its proper divisors (446536960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

319485440 is an equidigital number, since it uses as much as digits as its factorization.

319485440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124822 (or 124806 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 319485440 is about 17874.1556443934. The cubic root of 319485440 is about 683.6235631443.

The spelling of 319485440 in words is "three hundred nineteen million, four hundred eighty-five thousand, four hundred forty".