1114388921 has 2 divisors, whose sum is σ = 1114388922. Its totient is φ = 1114388920.

The previous prime is 1114388867. The next prime is 1114388929. The reversal of 1114388921 is 1298834111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 940280896 + 174108025 = 30664^2 + 13195^2 .

It is an emirp because it is prime and its reverse (1298834111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1114388921 - 2¹⁴ = 1114372537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1114388929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557194460 + 557194461.

It is an arithmetic number, because the mean of its divisors is an integer number (557194461).

Almost surely, 2^1114388921 is an apocalyptic number.

It is an amenable number.

1114388921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1114388921 is an equidigital number, since it uses as much as digits as its factorization.

1114388921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 38.

The square root of 1114388921 is about 33382.4642739268. The cubic root of 1114388921 is about 1036.7616605063.

The spelling of 1114388921 in words is "one billion, one hundred fourteen million, three hundred eighty-eight thousand, nine hundred twenty-one".