1344555997 has 2 divisors, whose sum is σ = 1344555998. Its totient is φ = 1344555996.

The previous prime is 1344555983. The next prime is 1344556001. The reversal of 1344555997 is 7995554431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1344028921 + 527076 = 36661^2 + 726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344555997 - 2⁷ = 1344555869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1344555907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672277998 + 672277999.

It is an arithmetic number, because the mean of its divisors is an integer number (672277999).

Almost surely, 2^1344555997 is an apocalyptic number.

It is an amenable number.

1344555997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344555997 is an equidigital number, since it uses as much as digits as its factorization.

1344555997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402000, while the sum is 52.

The square root of 1344555997 is about 36668.1878063261. The cubic root of 1344555997 is about 1103.7218275056.

The spelling of 1344555997 in words is "one billion, three hundred forty-four million, five hundred fifty-five thousand, nine hundred ninety-seven".