1241443993 has 2 divisors, whose sum is σ = 1241443994. Its totient is φ = 1241443992.

The previous prime is 1241443979. The next prime is 1241444033. The reversal of 1241443993 is 3993441421.

It is an a-pointer prime, because the next prime (1241444033) can be obtained adding 1241443993 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1137240729 + 104203264 = 33723^2 + 10208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241443993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1241444993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620721996 + 620721997.

It is an arithmetic number, because the mean of its divisors is an integer number (620721997).

Almost surely, 2^1241443993 is an apocalyptic number.

It is an amenable number.

1241443993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241443993 is an equidigital number, since it uses as much as digits as its factorization.

1241443993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 40.

The square root of 1241443993 is about 35234.1310805304. The cubic root of 1241443993 is about 1074.7539348108.

The spelling of 1241443993 in words is "one billion, two hundred forty-one million, four hundred forty-three thousand, nine hundred ninety-three".