1440913 has 2 divisors, whose sum is σ = 1440914. Its totient is φ = 1440912.

The previous prime is 1440889. The next prime is 1440949. The reversal of 1440913 is 3190441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1046529 + 394384 = 1023^2 + 628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440913 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720456 + 720457.

It is an arithmetic number, because the mean of its divisors is an integer number (720457).

2^1440913 is an apocalyptic number.

It is an amenable number.

1440913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440913 is an equidigital number, since it uses as much as digits as its factorization.

1440913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1440913 is about 1200.3803563871. The cubic root of 1440913 is about 112.9481841429.

The spelling of 1440913 in words is "one million, four hundred forty thousand, nine hundred thirteen".