404013351 has 16 divisors (see below), whose sum is σ = 619776000. Its totient is φ = 229313568.

The previous prime is 404013349. The next prime is 404013353. The reversal of 404013351 is 153310404.

It is an interprime number because it is at equal distance from previous prime (404013349) and next prime (404013353).

It is not a de Polignac number, because 404013351 - 2¹ = 404013349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404013353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61431 + ... + 67688.

It is an arithmetic number, because the mean of its divisors is an integer number (38736000).

Almost surely, 2^404013351 is an apocalyptic number.

404013351 is a deficient number, since it is larger than the sum of its proper divisors (215762649).

404013351 is a wasteful number, since it uses less digits than its factorization.

404013351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129278.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 404013351 is about 20100.0833580361. The cubic root of 404013351 is about 739.2623224666.

Adding to 404013351 its reverse (153310404), we get a palindrome (557323755).

It can be divided in two parts, 4040 and 13351, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 404013351 in words is "four hundred four million, thirteen thousand, three hundred fifty-one".