1440000097 has 4 divisors (see below), whose sum is σ = 1440823300. Its totient is φ = 1439176896.

The previous prime is 1440000083. The next prime is 1440000103. The reversal of 1440000097 is 7900000441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7900000441 = 1171 ⋅6746371.

It can be written as a sum of positive squares in 2 ways, for example, as 671379921 + 768620176 = 25911^2 + 27724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440000097 - 2¹⁹ = 1439475809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440000797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408972 + ... + 412477.

It is an arithmetic number, because the mean of its divisors is an integer number (360205825).

Almost surely, 2^1440000097 is an apocalyptic number.

It is an amenable number.

1440000097 is a deficient number, since it is larger than the sum of its proper divisors (823203).

1440000097 is an equidigital number, since it uses as much as digits as its factorization.

1440000097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823202.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1440000097 is about 37947.3332001078. Note that the first 3 decimals coincide. The cubic root of 1440000097 is about 1129.2432600129.

The spelling of 1440000097 in words is "one billion, four hundred forty million, ninety-seven", and thus it is an aban number.