1224340399 has 2 divisors, whose sum is σ = 1224340400. Its totient is φ = 1224340398.

The previous prime is 1224340363. The next prime is 1224340409. The reversal of 1224340399 is 9930434221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1224340399 - 2¹⁵ = 1224307631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224340309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612170199 + 612170200.

It is an arithmetic number, because the mean of its divisors is an integer number (612170200).

Almost surely, 2^1224340399 is an apocalyptic number.

1224340399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224340399 is an equidigital number, since it uses as much as digits as its factorization.

1224340399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 1224340399 is about 34990.5758597940. The cubic root of 1224340399 is about 1069.7954012391.

The spelling of 1224340399 in words is "one billion, two hundred twenty-four million, three hundred forty thousand, three hundred ninety-nine".