938978994 has 16 divisors (see below), whose sum is σ = 1942715520. Its totient is φ = 302200080.

The previous prime is 938978981. The next prime is 938979011. The reversal of 938978994 is 499879839.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2698042 + ... + 2698389.

It is an arithmetic number, because the mean of its divisors is an integer number (121419720).

Almost surely, 2^938978994 is an apocalyptic number.

938978994 is an abundant number, since it is smaller than the sum of its proper divisors (1003736526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

938978994 is a wasteful number, since it uses less digits than its factorization.

938978994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396465.

The product of its digits is 35271936, while the sum is 66.

The square root of 938978994 is about 30642.7641377210. The cubic root of 938978994 is about 979.2313123924.

The spelling of 938978994 in words is "nine hundred thirty-eight million, nine hundred seventy-eight thousand, nine hundred ninety-four".