403944354 has 64 divisors (see below), whose sum is σ = 1021870080. Its totient is φ = 117081360.

The previous prime is 403944337. The next prime is 403944383. The reversal of 403944354 is 453449304.

It is a happy number.

It is a super-2 number, since 2×403944354² = 326342082256954632, which contains 22 as substring.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 1122 + ... + 28445.

It is an arithmetic number, because the mean of its divisors is an integer number (15966720).

Almost surely, 2^403944354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403944354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (510935040).

403944354 is an abundant number, since it is smaller than the sum of its proper divisors (617925726).

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

403944354 is a wasteful number, since it uses less digits than its factorization.

403944354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29612 (or 29606 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 403944354 is about 20098.3669485856. The cubic root of 403944354 is about 739.2202365749.

The spelling of 403944354 in words is "four hundred three million, nine hundred forty-four thousand, three hundred fifty-four".