9903899 has 4 divisors (see below), whose sum is σ = 10066320. Its totient is φ = 9741480.

The previous prime is 9903871. The next prime is 9903913. The reversal of 9903899 is 9983099.

It is a happy number.

9903899 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9983099 = 7 ⋅1426157.

It is a cyclic number.

It is not a de Polignac number, because 9903899 - 2¹⁶ = 9838363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9903499) 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, 81119 + ... + 81240.

It is an arithmetic number, because the mean of its divisors is an integer number (2516580).

Almost surely, 2^9903899 is an apocalyptic number.

9903899 is a deficient number, since it is larger than the sum of its proper divisors (162421).

9903899 is a wasteful number, since it uses less digits than its factorization.

9903899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162420.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 9903899 is about 3147.0460752903. The cubic root of 9903899 is about 214.7511019110.

The spelling of 9903899 in words is "nine million, nine hundred three thousand, eight hundred ninety-nine".