9780718429439 has 4 divisors (see below), whose sum is σ = 10295493083640. Its totient is φ = 9265943775240.

The previous prime is 9780718429409. The next prime is 9780718429463. The reversal of 9780718429439 is 9349248170879.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9780718429439 - 2¹⁶ = 9780718363903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9780718429409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257387327072 + ... + 257387327109.

It is an arithmetic number, because the mean of its divisors is an integer number (2573873270910).

Almost surely, 2^{9780718429439} is an apocalyptic number.

9780718429439 is a deficient number, since it is larger than the sum of its proper divisors (514774654201).

9780718429439 is a wasteful number, since it uses less digits than its factorization.

9780718429439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514774654200.

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 9780718429439 in words is "nine trillion, seven hundred eighty billion, seven hundred eighteen million, four hundred twenty-nine thousand, four hundred thirty-nine".