396761984 has 32 divisors (see below), whose sum is σ = 797448240. Its totient is φ = 196618240.

The previous prime is 396761977. The next prime is 396762059. The reversal of 396761984 is 489167693.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749 + ... + 28179.

Almost surely, 2^396761984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396761984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398724120).

396761984 is an abundant number, since it is smaller than the sum of its proper divisors (400686256).

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

396761984 is a wasteful number, since it uses less digits than its factorization.

396761984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27558 (or 27546 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The square root of 396761984 is about 19918.8851093629. The cubic root of 396761984 is about 734.8127519060.

The spelling of 396761984 in words is "three hundred ninety-six million, seven hundred sixty-one thousand, nine hundred eighty-four".