993139903 has 16 divisors (see below), whose sum is σ = 1179763200. Its totient is φ = 818258976.

The previous prime is 993139871. The next prime is 993139909. The reversal of 993139903 is 309931399.

It is a cyclic number.

It is not a de Polignac number, because 993139903 - 2⁵ = 993139871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993139909) 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, 1603 + ... + 44596.

It is an arithmetic number, because the mean of its divisors is an integer number (73735200).

Almost surely, 2^993139903 is an apocalyptic number.

993139903 is a deficient number, since it is larger than the sum of its proper divisors (186623297).

993139903 is a wasteful number, since it uses less digits than its factorization.

993139903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46326.

The product of its (nonzero) digits is 177147, while the sum is 46.

The square root of 993139903 is about 31514.1222787499. The cubic root of 993139903 is about 997.7080519875.

The spelling of 993139903 in words is "nine hundred ninety-three million, one hundred thirty-nine thousand, nine hundred three".