99619 has 8 divisors (see below), whose sum is σ = 109760. Its totient is φ = 89856.

The previous prime is 99611. The next prime is 99623. The reversal of 99619 is 91699.

It is a happy number.

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

It is not a de Polignac number, because 99619 - 2³ = 99611 is a prime.

It is a super-2 number, since 2×99619² = 19847890322, which 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 (99611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979 + ... + 1075.

It is an arithmetic number, because the mean of its divisors is an integer number (13720).

2⁹⁹⁶¹⁹ is an apocalyptic number.

99619 is a deficient number, since it is larger than the sum of its proper divisors (10141).

99619 is a wasteful number, since it uses less digits than its factorization.

99619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189.

The product of its digits is 4374, while the sum is 34.

The square root of 99619 is about 315.6247772276. The cubic root of 99619 is about 46.3568651349.

The spelling of 99619 in words is "ninety-nine thousand, six hundred nineteen".