403394380 has 12 divisors (see below), whose sum is σ = 847128240. Its totient is φ = 161357744.

The previous prime is 403394363. The next prime is 403394389. The reversal of 403394380 is 83493304.

It is not an unprimeable number, because it can be changed into a prime (403394389) by changing a digit.

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, 10084840 + ... + 10084879.

It is an arithmetic number, because the mean of its divisors is an integer number (70594020).

Almost surely, 2^403394380 is an apocalyptic number.

It is an amenable number.

403394380 is an abundant number, since it is smaller than the sum of its proper divisors (443733860).

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

403394380 is a wasteful number, since it uses less digits than its factorization.

403394380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20169728 (or 20169726 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 403394380 is about 20084.6802314600. The cubic root of 403394380 is about 738.8845991254.

The spelling of 403394380 in words is "four hundred three million, three hundred ninety-four thousand, three hundred eighty".