1440297 has 6 divisors (see below), whose sum is σ = 2080442. Its totient is φ = 960192.

The previous prime is 1440293. The next prime is 1440301. The reversal of 1440297 is 7920441.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1440293) and next prime (1440301).

It can be written as a sum of positive squares in only one way, i.e., 793881 + 646416 = 891^2 + 804^2 .

It is not a de Polignac number, because 1440297 - 2² = 1440293 is a prime.

It is a Duffinian number.

1440297 is a modest number, since divided by 297 gives 144 as remainder.

1440297 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1440297.

It is not an unprimeable number, because it can be changed into a prime (1440293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80008 + ... + 80025.

2^1440297 is an apocalyptic number.

It is an amenable number.

1440297 is a deficient number, since it is larger than the sum of its proper divisors (640145).

1440297 is a wasteful number, since it uses less digits than its factorization.

1440297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160039 (or 160036 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1440297 is about 1200.1237436198. The cubic root of 1440297 is about 112.9320864793.

The spelling of 1440297 in words is "one million, four hundred forty thousand, two hundred ninety-seven".