9142639039 has 2 divisors, whose sum is σ = 9142639040. Its totient is φ = 9142639038.

The previous prime is 9142638971. The next prime is 9142639043. The reversal of 9142639039 is 9309362419.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9142639039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9142639039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9142639339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4571319519 + 4571319520.

It is an arithmetic number, because the mean of its divisors is an integer number (4571319520).

Almost surely, 2^9142639039 is an apocalyptic number.

9142639039 is a deficient number, since it is larger than the sum of its proper divisors (1).

9142639039 is an equidigital number, since it uses as much as digits as its factorization.

9142639039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 9142639039 is about 95617.1482475816. The cubic root of 9142639039 is about 2091.0152069023.

The spelling of 9142639039 in words is "nine billion, one hundred forty-two million, six hundred thirty-nine thousand, thirty-nine".