3865473739 has 2 divisors, whose sum is σ = 3865473740. Its totient is φ = 3865473738.

The previous prime is 3865473701. The next prime is 3865473763. The reversal of 3865473739 is 9373745683.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3865473739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3865473739.

It is not a weakly prime, because it can be changed into another prime (3865473839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932736869 + 1932736870.

It is an arithmetic number, because the mean of its divisors is an integer number (1932736870).

Almost surely, 2^3865473739 is an apocalyptic number.

3865473739 is a deficient number, since it is larger than the sum of its proper divisors (1).

3865473739 is an equidigital number, since it uses as much as digits as its factorization.

3865473739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11430720, while the sum is 55.

The square root of 3865473739 is about 62172.9341353615. The cubic root of 3865473739 is about 1569.4021469061.

It can be divided in two parts, 386547 and 3739, that added together give a triangular number (390286 = T₈₈₃).

The spelling of 3865473739 in words is "three billion, eight hundred sixty-five million, four hundred seventy-three thousand, seven hundred thirty-nine".