7405755139 has 2 divisors, whose sum is σ = 7405755140. Its totient is φ = 7405755138.

The previous prime is 7405755131. The next prime is 7405755151. The reversal of 7405755139 is 9315575047.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9315575047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7405755139 - 2³ = 7405755131 is a prime.

It is not a weakly prime, because it can be changed into another prime (7405755131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3702877569 + 3702877570.

It is an arithmetic number, because the mean of its divisors is an integer number (3702877570).

Almost surely, 2^7405755139 is an apocalyptic number.

7405755139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7405755139 is an equidigital number, since it uses as much as digits as its factorization.

7405755139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 661500, while the sum is 46.

The square root of 7405755139 is about 86056.6972350206. The cubic root of 7405755139 is about 1949.2002101669.

The spelling of 7405755139 in words is "seven billion, four hundred five million, seven hundred fifty-five thousand, one hundred thirty-nine".