1210399116 has 48 divisors (see below), whose sum is σ = 3010543200. Its totient is φ = 377175040.

The previous prime is 1210399109. The next prime is 1210399117. The reversal of 1210399116 is 6119930121.

It is not an unprimeable number, because it can be changed into a prime (1210399117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10486 + ... + 50306.

It is an arithmetic number, because the mean of its divisors is an integer number (62719650).

Almost surely, 2^1210399116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210399116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1505271600).

1210399116 is an abundant number, since it is smaller than the sum of its proper divisors (1800144084).

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

1210399116 is a wasteful number, since it uses less digits than its factorization.

1210399116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39994 (or 39992 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 1210399116 is about 34790.7906779941. The cubic root of 1210399116 is about 1065.7193861191.

The spelling of 1210399116 in words is "one billion, two hundred ten million, three hundred ninety-nine thousand, one hundred sixteen".