1440997607 has 4 divisors (see below), whose sum is σ = 1646854416. Its totient is φ = 1235140800.

The previous prime is 1440997567. The next prime is 1440997627. The reversal of 1440997607 is 7067990441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7067990441 = 109 ⋅64843949.

It is a cyclic number.

It is not a de Polignac number, because 1440997607 - 2⁶ = 1440997543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440997627) 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, 102928394 + ... + 102928407.

It is an arithmetic number, because the mean of its divisors is an integer number (411713604).

Almost surely, 2^1440997607 is an apocalyptic number.

1440997607 is a deficient number, since it is larger than the sum of its proper divisors (205856809).

1440997607 is an equidigital number, since it uses as much as digits as its factorization.

1440997607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205856808.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 1440997607 is about 37960.4742725904. The cubic root of 1440997607 is about 1129.5039478300.

The spelling of 1440997607 in words is "one billion, four hundred forty million, nine hundred ninety-seven thousand, six hundred seven".