993471925 has 24 divisors (see below), whose sum is σ = 1325787912. Its totient is φ = 735744000.

The previous prime is 993471917. The next prime is 993471929. The reversal of 993471925 is 529174399.

It can be written as a sum of positive squares in 12 ways, for example, as 344139601 + 649332324 = 18551^2 + 25482^2 .

It is not a de Polignac number, because 993471925 - 2³ = 993471917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993471929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6765 + ... + 45085.

It is an arithmetic number, because the mean of its divisors is an integer number (55241163).

Almost surely, 2^993471925 is an apocalyptic number.

It is an amenable number.

993471925 is a deficient number, since it is larger than the sum of its proper divisors (332315987).

993471925 is a wasteful number, since it uses less digits than its factorization.

993471925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38409 (or 38404 counting only the distinct ones).

The product of its digits is 612360, while the sum is 49.

The square root of 993471925 is about 31519.3896673143. The cubic root of 993471925 is about 997.8192226673.

The spelling of 993471925 in words is "nine hundred ninety-three million, four hundred seventy-one thousand, nine hundred twenty-five".