1224999973 has 2 divisors, whose sum is σ = 1224999974. Its totient is φ = 1224999972.

The previous prime is 1224999967. The next prime is 1225000001. The reversal of 1224999973 is 3799994221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 812991169 + 412008804 = 28513^2 + 20298^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224999973 - 2¹⁷ = 1224868901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224999473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612499986 + 612499987.

It is an arithmetic number, because the mean of its divisors is an integer number (612499987).

Almost surely, 2^1224999973 is an apocalyptic number.

It is an amenable number.

1224999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224999973 is an equidigital number, since it uses as much as digits as its factorization.

1224999973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 55.

The square root of 1224999973 is about 34999.9996142857. Note that the first 3 decimals coincide. The cubic root of 1224999973 is about 1069.9874727039.

The spelling of 1224999973 in words is "one billion, two hundred twenty-four million, nine hundred ninety-nine thousand, nine hundred seventy-three".