993978135 has 48 divisors (see below), whose sum is σ = 1796121600. Its totient is φ = 527329440.

The previous prime is 993978127. The next prime is 993978157. The reversal of 993978135 is 531879399.

It is not a de Polignac number, because 993978135 - 2³ = 993978127 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239730 + ... + 243840.

It is an arithmetic number, because the mean of its divisors is an integer number (37419200).

Almost surely, 2^993978135 is an apocalyptic number.

993978135 is a deficient number, since it is larger than the sum of its proper divisors (802143465).

993978135 is a wasteful number, since it uses less digits than its factorization.

993978135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330 (or 4318 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 993978135 is about 31527.4187811181. The cubic root of 993978135 is about 997.9886689262.

The spelling of 993978135 in words is "nine hundred ninety-three million, nine hundred seventy-eight thousand, one hundred thirty-five".