2739240457 has 2 divisors, whose sum is σ = 2739240458. Its totient is φ = 2739240456.

The previous prime is 2739240433. The next prime is 2739240467. The reversal of 2739240457 is 7540429372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1608330816 + 1130909641 = 40104^2 + 33629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2739240457 is a prime.

It is not a weakly prime, because it can be changed into another prime (2739240467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1369620228 + 1369620229.

It is an arithmetic number, because the mean of its divisors is an integer number (1369620229).

Almost surely, 2^2739240457 is an apocalyptic number.

It is an amenable number.

2739240457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2739240457 is an equidigital number, since it uses as much as digits as its factorization.

2739240457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 2739240457 is about 52337.7536487763. The cubic root of 2739240457 is about 1399.1900854579.

The spelling of 2739240457 in words is "two billion, seven hundred thirty-nine million, two hundred forty thousand, four hundred fifty-seven".