105003999 has 8 divisors (see below), whose sum is σ = 155561520. Its totient is φ = 70002648.

The previous prime is 105003991. The next prime is 105004001. The reversal of 105003999 is 999300501.

It is not a de Polignac number, because 105003999 - 2³ = 105003991 is a prime.

It is a super-2 number, since 2×105003999² = 22051679611984002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105003991) 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, 1944492 + ... + 1944545.

It is an arithmetic number, because the mean of its divisors is an integer number (19445190).

Almost surely, 2^105003999 is an apocalyptic number.

105003999 is a deficient number, since it is larger than the sum of its proper divisors (50557521).

105003999 is an equidigital number, since it uses as much as digits as its factorization.

105003999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889046 (or 3889040 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 105003999 is about 10247.1458953213. The cubic root of 105003999 is about 471.7753871805.

The spelling of 105003999 in words is "one hundred five million, three thousand, nine hundred ninety-nine".