404342380 has 24 divisors (see below), whose sum is σ = 914436432. Its totient is φ = 149295552.

The previous prime is 404342377. The next prime is 404342383. The reversal of 404342380 is 83243404.

It is an interprime number because it is at equal distance from previous prime (404342377) and next prime (404342383).

It is not an unprimeable number, because it can be changed into a prime (404342383) 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 7 ways as a sum of consecutive naturals, for example, 777322 + ... + 777841.

It is an arithmetic number, because the mean of its divisors is an integer number (38101518).

Almost surely, 2^404342380 is an apocalyptic number.

It is an amenable number.

404342380 is an abundant number, since it is smaller than the sum of its proper divisors (510094052).

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

404342380 is a wasteful number, since it uses less digits than its factorization.

404342380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555185 (or 1555183 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 404342380 is about 20108.2664593445. The cubic root of 404342380 is about 739.4629534116.

Adding to 404342380 its reverse (83243404), we get a palindrome (487585784).

The spelling of 404342380 in words is "four hundred four million, three hundred forty-two thousand, three hundred eighty".