403209472 has 36 divisors (see below), whose sum is σ = 807328900. Its totient is φ = 200982528.

The previous prime is 403209463. The next prime is 403209479. The reversal of 403209472 is 274902304.

It can be written as a sum of positive squares in 2 ways, for example, as 101284096 + 301925376 = 10064^2 + 17376^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403209479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87088 + ... + 91600.

Almost surely, 2^403209472 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 403209472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403664450).

403209472 is an abundant number, since it is smaller than the sum of its proper divisors (404119428).

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

403209472 is an equidigital number, since it uses as much as digits as its factorization.

403209472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878 (or 4864 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 403209472 is about 20080.0764938782. The cubic root of 403209472 is about 738.7716851790.

The spelling of 403209472 in words is "four hundred three million, two hundred nine thousand, four hundred seventy-two".