1224442987 has 2 divisors, whose sum is σ = 1224442988. Its totient is φ = 1224442986.

The previous prime is 1224442979. The next prime is 1224442993. The reversal of 1224442987 is 7892444221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1224442987 - 2³ = 1224442979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1224442907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612221493 + 612221494.

It is an arithmetic number, because the mean of its divisors is an integer number (612221494).

Almost surely, 2^1224442987 is an apocalyptic number.

1224442987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224442987 is an equidigital number, since it uses as much as digits as its factorization.

1224442987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 43.

The square root of 1224442987 is about 34992.0417666646. The cubic root of 1224442987 is about 1069.8252799410.

The spelling of 1224442987 in words is "one billion, two hundred twenty-four million, four hundred forty-two thousand, nine hundred eighty-seven".