1440032197 has 2 divisors, whose sum is σ = 1440032198. Its totient is φ = 1440032196.

The previous prime is 1440032179. The next prime is 1440032263. The reversal of 1440032197 is 7912300441.

Together with previous prime (1440032179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1372035681 + 67996516 = 37041^2 + 8246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440032197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440032137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720016098 + 720016099.

It is an arithmetic number, because the mean of its divisors is an integer number (720016099).

Almost surely, 2^1440032197 is an apocalyptic number.

It is an amenable number.

1440032197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440032197 is an equidigital number, since it uses as much as digits as its factorization.

1440032197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1440032197 is about 37947.7561523735. The cubic root of 1440032197 is about 1129.2516508548.

The spelling of 1440032197 in words is "one billion, four hundred forty million, thirty-two thousand, one hundred ninety-seven".