99904403 has 4 divisors (see below), whose sum is σ = 102604560. Its totient is φ = 97204248.

The previous prime is 99904367. The next prime is 99904411. The reversal of 99904403 is 30440999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30440999 = 17 ⋅1790647.

It is a cyclic number.

It is not a de Polignac number, because 99904403 - 2¹⁰ = 99903379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99904463) 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, 1350023 + ... + 1350096.

It is an arithmetic number, because the mean of its divisors is an integer number (25651140).

Almost surely, 2^99904403 is an apocalyptic number.

99904403 is a deficient number, since it is larger than the sum of its proper divisors (2700157).

99904403 is a wasteful number, since it uses less digits than its factorization.

99904403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700156.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 99904403 is about 9995.2190071053. The cubic root of 99904403 is about 464.0109288820.

The spelling of 99904403 in words is "ninety-nine million, nine hundred four thousand, four hundred three".