99019 has 4 divisors (see below), whose sum is σ = 100296. Its totient is φ = 97744.

The previous prime is 99017. The next prime is 99023. The reversal of 99019 is 91099.

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 99019 - 2¹ = 99017 is a prime.

It is a super-2 number, since 2×99019² = 19609524722, 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 (99013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514 + ... + 679.

It is an arithmetic number, because the mean of its divisors is an integer number (25074).

2⁹⁹⁰¹⁹ is an apocalyptic number.

99019 is a deficient number, since it is larger than the sum of its proper divisors (1277).

99019 is a wasteful number, since it uses less digits than its factorization.

99019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 99019 is about 314.6728459845. The cubic root of 99019 is about 46.2636093381.

The spelling of 99019 in words is "ninety-nine thousand, nineteen".