1440270739 has 2 divisors, whose sum is σ = 1440270740. Its totient is φ = 1440270738.

The previous prime is 1440270721. The next prime is 1440270779. The reversal of 1440270739 is 9370720441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1440270739 - 2¹¹ = 1440268691 is a prime.

It is a super-2 number, since 2×1440270739² = 4148759603239212242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1440270698 and 1440270707.

It is not a weakly prime, because it can be changed into another prime (1440270709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720135369 + 720135370.

It is an arithmetic number, because the mean of its divisors is an integer number (720135370).

Almost surely, 2^1440270739 is an apocalyptic number.

1440270739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440270739 is an equidigital number, since it uses as much as digits as its factorization.

1440270739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 1440270739 is about 37950.8990539091. The cubic root of 1440270739 is about 1129.3140010984.

The spelling of 1440270739 in words is "one billion, four hundred forty million, two hundred seventy thousand, seven hundred thirty-nine".