94219999 has 4 divisors (see below), whose sum is σ = 94240960. Its totient is φ = 94199040.

The previous prime is 94219987. The next prime is 94220003. The reversal of 94219999 is 99991249.

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 94219999 - 2¹⁷ = 94088927 is a prime.

It is a Duffinian number.

94219999 is a modest number, since divided by 9999 gives 9421 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94219919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687 + ... + 13744.

It is an arithmetic number, because the mean of its divisors is an integer number (23560240).

Almost surely, 2^94219999 is an apocalyptic number.

94219999 is a deficient number, since it is larger than the sum of its proper divisors (20961).

94219999 is a wasteful number, since it uses less digits than its factorization.

94219999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20960.

The product of its digits is 472392, while the sum is 52.

The square root of 94219999 is about 9706.6986663850. The cubic root of 94219999 is about 455.0380340947.

The spelling of 94219999 in words is "ninety-four million, two hundred nineteen thousand, nine hundred ninety-nine".