1214019989 has 32 divisors (see below), whose sum is σ = 1534520064. Its totient is φ = 934778880.

The previous prime is 1214019979. The next prime is 1214020007. The reversal of 1214019989 is 9899104121.

It is a de Polignac number, because none of the positive numbers 2^k-1214019989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214019959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1803557 + ... + 1804229.

It is an arithmetic number, because the mean of its divisors is an integer number (47953752).

Almost surely, 2^1214019989 is an apocalyptic number.

It is an amenable number.

1214019989 is a deficient number, since it is larger than the sum of its proper divisors (320500075).

1214019989 is a wasteful number, since it uses less digits than its factorization.

1214019989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197.

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 1214019989 is about 34842.7896271237. The cubic root of 1214019989 is about 1066.7810175042.

The spelling of 1214019989 in words is "one billion, two hundred fourteen million, nineteen thousand, nine hundred eighty-nine".