1440716649 has 8 divisors (see below), whose sum is σ = 1957200192. Its totient is φ = 942355440.

The previous prime is 1440716639. The next prime is 1440716659. The reversal of 1440716649 is 9466170441.

It is an interprime number because it is at equal distance from previous prime (1440716639) and next prime (1440716659).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1440716649 - 2¹³ = 1440708457 is a prime.

It is a super-3 number, since 3×1440716649³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1440716649.

It is not an unprimeable number, because it can be changed into a prime (1440716639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4530397 + ... + 4530714.

It is an arithmetic number, because the mean of its divisors is an integer number (244650024).

Almost surely, 2^1440716649 is an apocalyptic number.

It is an amenable number.

1440716649 is a deficient number, since it is larger than the sum of its proper divisors (516483543).

1440716649 is an equidigital number, since it uses as much as digits as its factorization.

1440716649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9061167.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1440716649 is about 37956.7734271500. The cubic root of 1440716649 is about 1129.4305348473.

The spelling of 1440716649 in words is "one billion, four hundred forty million, seven hundred sixteen thousand, six hundred forty-nine".