403798985 has 16 divisors (see below), whose sum is σ = 489532032. Its totient is φ = 319737600.

The previous prime is 403798981. The next prime is 403798991. The reversal of 403798985 is 589897304.

It is not a de Polignac number, because 403798985 - 2² = 403798981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403798981) 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, 412817 + ... + 413793.

It is an arithmetic number, because the mean of its divisors is an integer number (30595752).

Almost surely, 2^403798985 is an apocalyptic number.

It is an amenable number.

403798985 is a deficient number, since it is larger than the sum of its proper divisors (85733047).

403798985 is a wasteful number, since it uses less digits than its factorization.

403798985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 403798985 is about 20094.7501850608. The cubic root of 403798985 is about 739.1315505973.

The spelling of 403798985 in words is "four hundred three million, seven hundred ninety-eight thousand, nine hundred eighty-five".