16923939247 has 8 divisors (see below), whose sum is σ = 17203586400. Its totient is φ = 16644363360.

The previous prime is 16923939239. The next prime is 16923939251. The reversal of 16923939247 is 74293932961.

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

It is a cyclic number.

It is not a de Polignac number, because 16923939247 - 2³ = 16923939239 is a prime.

It is a super-2 number, since 2×16923939247² (a number of 21 digits) contains 22 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 (16923939047) 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, 692478 + ... + 716500.

It is an arithmetic number, because the mean of its divisors is an integer number (2150448300).

Almost surely, 2^16923939247 is an apocalyptic number.

16923939247 is a deficient number, since it is larger than the sum of its proper divisors (279647153).

16923939247 is a wasteful number, since it uses less digits than its factorization.

16923939247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35633.

The product of its digits is 4408992, while the sum is 55.

The spelling of 16923939247 in words is "sixteen billion, nine hundred twenty-three million, nine hundred thirty-nine thousand, two hundred forty-seven".