16442917439 has 8 divisors (see below), whose sum is σ = 17713680432. Its totient is φ = 15173000640.

The previous prime is 16442917399. The next prime is 16442917451. The reversal of 16442917439 is 93471924461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16442917439 is a prime.

It is a super-3 number, since 3×16442917439³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16442967439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170894 + ... + 249179.

It is an arithmetic number, because the mean of its divisors is an integer number (2214210054).

Almost surely, 2^16442917439 is an apocalyptic number.

16442917439 is a deficient number, since it is larger than the sum of its proper divisors (1270762993).

16442917439 is a wasteful number, since it uses less digits than its factorization.

16442917439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423097.

The product of its digits is 1306368, while the sum is 50.

The spelling of 16442917439 in words is "sixteen billion, four hundred forty-two million, nine hundred seventeen thousand, four hundred thirty-nine".