404434312 has 8 divisors (see below), whose sum is σ = 758314350. Its totient is φ = 202217152.

The previous prime is 404434273. The next prime is 404434313. The reversal of 404434312 is 213434404.

It can be written as a sum of positive squares in only one way, i.e., 212168356 + 192265956 = 14566^2 + 13866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×404434312² = 327134225445826688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404434313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25277137 + ... + 25277152.

Almost surely, 2^404434312 is an apocalyptic number.

It is an amenable number.

404434312 is a deficient number, since it is larger than the sum of its proper divisors (353880038).

404434312 is a wasteful number, since it uses less digits than its factorization.

404434312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50554295 (or 50554291 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 404434312 is about 20110.5522549730. The cubic root of 404434312 is about 739.5189910340.

Adding to 404434312 its reverse (213434404), we get a palindrome (617868716).

The spelling of 404434312 in words is "four hundred four million, four hundred thirty-four thousand, three hundred twelve".