1438700797 has 2 divisors, whose sum is σ = 1438700798. Its totient is φ = 1438700796.

The previous prime is 1438700777. The next prime is 1438700801. The reversal of 1438700797 is 7970078341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 851414041 + 587286756 = 29179^2 + 24234^2 .

It is a cyclic number.

It is not a de Polignac number, because 1438700797 - 2¹¹ = 1438698749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1438700777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719350398 + 719350399.

It is an arithmetic number, because the mean of its divisors is an integer number (719350399).

Almost surely, 2^1438700797 is an apocalyptic number.

It is an amenable number.

1438700797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1438700797 is an equidigital number, since it uses as much as digits as its factorization.

1438700797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 1438700797 is about 37930.2095564999. The cubic root of 1438700797 is about 1128.9035222401.

The spelling of 1438700797 in words is "one billion, four hundred thirty-eight million, seven hundred thousand, seven hundred ninety-seven".