403481988 has 288 divisors, whose sum is σ = 1350236160. Its totient is φ = 98703360.

The previous prime is 403481987. The next prime is 403481989. The reversal of 403481988 is 889184304.

It is an interprime number because it is at equal distance from previous prime (403481987) and next prime (403481989).

It is not an unprimeable number, because it can be changed into a prime (403481987) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2945056 + ... + 2945192.

It is an arithmetic number, because the mean of its divisors is an integer number (4688320).

Almost surely, 2^403481988 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 403481988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675118080).

403481988 is an abundant number, since it is smaller than the sum of its proper divisors (946754172).

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

403481988 is a wasteful number, since it uses less digits than its factorization.

403481988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 403481988 is about 20086.8610788246. The cubic root of 403481988 is about 738.9380848453.

The spelling of 403481988 in words is "four hundred three million, four hundred eighty-one thousand, nine hundred eighty-eight".