16399419 has 8 divisors (see below), whose sum is σ = 22278672. Its totient is φ = 10726560.

The previous prime is 16399393. The next prime is 16399421. The reversal of 16399419 is 91499361.

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

It is not a de Polignac number, because 16399419 - 2⁷ = 16399291 is a prime.

It is a super-2 number, since 2×16399419² = 537881887075122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16399429) 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, 51412 + ... + 51729.

It is an arithmetic number, because the mean of its divisors is an integer number (2784834).

Almost surely, 2^16399419 is an apocalyptic number.

16399419 is a deficient number, since it is larger than the sum of its proper divisors (5879253).

16399419 is a wasteful number, since it uses less digits than its factorization.

16399419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103197.

The product of its digits is 52488, while the sum is 42.

The square root of 16399419 is about 4049.6196117660. The cubic root of 16399419 is about 254.0638182585.

The spelling of 16399419 in words is "sixteen million, three hundred ninety-nine thousand, four hundred nineteen".