1679209904 has 20 divisors (see below), whose sum is σ = 3265572240. Its totient is φ = 836481600.

The previous prime is 1679209897. The next prime is 1679209963. The reversal of 1679209904 is 4099029761.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190772 + ... + 199379.

It is an arithmetic number, because the mean of its divisors is an integer number (163278612).

Almost surely, 2^1679209904 is an apocalyptic number.

It is an amenable number.

1679209904 is a deficient number, since it is larger than the sum of its proper divisors (1586362336).

1679209904 is a wasteful number, since it uses less digits than its factorization.

1679209904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390428 (or 390422 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1679209904 is about 40978.1637460733. The cubic root of 1679209904 is about 1188.5980014509.

The spelling of 1679209904 in words is "one billion, six hundred seventy-nine million, two hundred nine thousand, nine hundred four".