404223415 has 16 divisors (see below), whose sum is σ = 502053120. Its totient is φ = 312111360.

The previous prime is 404223401. The next prime is 404223437. The reversal of 404223415 is 514322404.

It is a happy number.

It is not a de Polignac number, because 404223415 - 2¹³ = 404215223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404223415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58251 + ... + 64819.

It is an arithmetic number, because the mean of its divisors is an integer number (31378320).

Almost surely, 2^404223415 is an apocalyptic number.

404223415 is a deficient number, since it is larger than the sum of its proper divisors (97829705).

404223415 is a wasteful number, since it uses less digits than its factorization.

404223415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 404223415 is about 20105.3081299442. The cubic root of 404223415 is about 739.3904250763.

Adding to 404223415 its reverse (514322404), we get a palindrome (918545819).

The spelling of 404223415 in words is "four hundred four million, two hundred twenty-three thousand, four hundred fifteen".