319749966 has 12 divisors (see below), whose sum is σ = 692791632. Its totient is φ = 106583316.

The previous prime is 319749959. The next prime is 319749971. The reversal of 319749966 is 669947913.

319749966 is a `hidden beast` number, since 3 + 1 + 97 + 499 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8881926 + ... + 8881961.

It is an arithmetic number, because the mean of its divisors is an integer number (57732636).

Almost surely, 2^319749966 is an apocalyptic number.

319749966 is an abundant number, since it is smaller than the sum of its proper divisors (373041666).

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

319749966 is a wasteful number, since it uses less digits than its factorization.

319749966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17763895 (or 17763892 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 319749966 is about 17881.5537915473. The cubic root of 319749966 is about 683.8121855327.

The spelling of 319749966 in words is "three hundred nineteen million, seven hundred forty-nine thousand, nine hundred sixty-six".