1709979216 has 40 divisors (see below), whose sum is σ = 4819033824. Its totient is φ = 518175360.

The previous prime is 1709979211. The next prime is 1709979217. The reversal of 1709979216 is 6129799071.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1709979211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1618771 + ... + 1619826.

Almost surely, 2^1709979216 is an apocalyptic number.

1709979216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1709979216 is an abundant number, since it is smaller than the sum of its proper divisors (3109054608).

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

1709979216 is a wasteful number, since it uses less digits than its factorization.

1709979216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238619 (or 3238613 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 51.

The square root of 1709979216 is about 41351.8949505340. The cubic root of 1709979216 is about 1195.8139365964.

The spelling of 1709979216 in words is "one billion, seven hundred nine million, nine hundred seventy-nine thousand, two hundred sixteen".