404323145 has 4 divisors (see below), whose sum is σ = 485187780. Its totient is φ = 323458512.

The previous prime is 404323123. The next prime is 404323151. The reversal of 404323145 is 541323404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 289918729 + 114404416 = 17027^2 + 10696^2 .

It is a cyclic number.

It is not a de Polignac number, because 404323145 - 2¹² = 404319049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40432310 + ... + 40432319.

It is an arithmetic number, because the mean of its divisors is an integer number (121296945).

Almost surely, 2^404323145 is an apocalyptic number.

It is an amenable number.

404323145 is a deficient number, since it is larger than the sum of its proper divisors (80864635).

404323145 is an equidigital number, since it uses as much as digits as its factorization.

404323145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80864634.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 404323145 is about 20107.7881677722. The cubic root of 404323145 is about 739.4512275442.

Adding to 404323145 its reverse (541323404), we get a palindrome (945646549).

The spelling of 404323145 in words is "four hundred four million, three hundred twenty-three thousand, one hundred forty-five".