16919427 has 8 divisors (see below), whose sum is σ = 25782016. Its totient is φ = 9668232.

The previous prime is 16919423. The next prime is 16919447. The reversal of 16919427 is 72491961.

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

It is not a de Polignac number, because 16919427 - 2² = 16919423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16919423) 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, 402823 + ... + 402864.

It is an arithmetic number, because the mean of its divisors is an integer number (3222752).

Almost surely, 2^16919427 is an apocalyptic number.

16919427 is a deficient number, since it is larger than the sum of its proper divisors (8862589).

16919427 is an equidigital number, since it uses as much as digits as its factorization.

16919427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805697.

The product of its digits is 27216, while the sum is 39.

The square root of 16919427 is about 4113.3231091175. The cubic root of 16919427 is about 256.7212883881.

The spelling of 16919427 in words is "sixteen million, nine hundred nineteen thousand, four hundred twenty-seven".