3905742739 has 2 divisors, whose sum is σ = 3905742740. Its totient is φ = 3905742738.

The previous prime is 3905742721. The next prime is 3905742767. The reversal of 3905742739 is 9372475093.

It is a weak prime.

It is an emirp because it is prime and its reverse (9372475093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3905742739 - 2⁹ = 3905742227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3905742692 and 3905742701.

It is not a weakly prime, because it can be changed into another prime (3905722739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1952871369 + 1952871370.

It is an arithmetic number, because the mean of its divisors is an integer number (1952871370).

Almost surely, 2^3905742739 is an apocalyptic number.

3905742739 is a deficient number, since it is larger than the sum of its proper divisors (1).

3905742739 is an equidigital number, since it uses as much as digits as its factorization.

3905742739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 49.

The square root of 3905742739 is about 62495.9417802468. The cubic root of 3905742739 is about 1574.8331378109.

It can be divided in two parts, 39057 and 42739, that added together give a square (81796 = 286²).

The spelling of 3905742739 in words is "three billion, nine hundred five million, seven hundred forty-two thousand, seven hundred thirty-nine".