99999419 has 16 divisors (see below), whose sum is σ = 111541248.
Its totient is φ = 89050752.
The previous prime is 99999401. The next prime is 99999437. The reversal of 99999419 is 91499999.
It is an interprime number because it is at equal distance from previous prime (99999401) and next prime (99999437).
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-99999419 is a prime.
It is a super-2 number, since 2×999994192 = 19999767600675122, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (99999439) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60269 + ... + 61905.
It is an arithmetic number, because the mean of its divisors is an integer number (6971328).
Almost surely, 299999419 is an apocalyptic number.
99999419 is a deficient number, since it is larger than the sum of its proper divisors (11541829).
99999419 is a wasteful number, since it uses less digits than its factorization.
99999419 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1814.
The product of its digits is 2125764, while the sum is 59.
The square root of 99999419 is about 9999.9709499578.
The cubic root of 99999419 is about 464.1579844385.
The spelling of 99999419 in words is "ninety-nine million, nine hundred ninety-nine thousand, four hundred nineteen".