1440470741 has 4 divisors (see below), whose sum is σ = 1525204332. Its totient is φ = 1355737152.

The previous prime is 1440470723. The next prime is 1440470767. The reversal of 1440470741 is 1470740441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1470740441 = 30269 ⋅48589.

It can be written as a sum of positive squares in 2 ways, for example, as 1027202500 + 413268241 = 32050^2 + 20329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440470741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440470698 and 1440470707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440470771) 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, 42366770 + ... + 42366803.

It is an arithmetic number, because the mean of its divisors is an integer number (381301083).

Almost surely, 2^1440470741 is an apocalyptic number.

It is an amenable number.

1440470741 is a deficient number, since it is larger than the sum of its proper divisors (84733591).

1440470741 is an equidigital number, since it uses as much as digits as its factorization.

1440470741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84733590.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 1440470741 is about 37953.5339724775. The cubic root of 1440470741 is about 1129.3662724292.

The spelling of 1440470741 in words is "one billion, four hundred forty million, four hundred seventy thousand, seven hundred forty-one".