1200979908 has 36 divisors (see below), whose sum is σ = 3100406400. Its totient is φ = 391808496.

The previous prime is 1200979907. The next prime is 1200979919. The reversal of 1200979908 is 8099790021.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1200979903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353208 + ... + 356591.

It is an arithmetic number, because the mean of its divisors is an integer number (86122400).

Almost surely, 2^1200979908 is an apocalyptic number.

1200979908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1200979908 is an abundant number, since it is smaller than the sum of its proper divisors (1899426492).

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

1200979908 is a wasteful number, since it uses less digits than its factorization.

1200979908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709856 (or 709851 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 1200979908 is about 34655.1570188334. The cubic root of 1200979908 is about 1062.9477426052.

The spelling of 1200979908 in words is "one billion, two hundred million, nine hundred seventy-nine thousand, nine hundred eight".