438721413 has 16 divisors (see below), whose sum is σ = 630334656. Its totient is φ = 269821440.

The previous prime is 438721399. The next prime is 438721417. The reversal of 438721413 is 314127834.

It is not a de Polignac number, because 438721413 - 2¹⁰ = 438720389 is a prime.

It is a super-3 number, since 3×438721413³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438721417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128853 + ... + 132213.

It is an arithmetic number, because the mean of its divisors is an integer number (39395916).

Almost surely, 2^438721413 is an apocalyptic number.

It is an amenable number.

438721413 is a deficient number, since it is larger than the sum of its proper divisors (191613243).

438721413 is a wasteful number, since it uses less digits than its factorization.

438721413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724.

The product of its digits is 16128, while the sum is 33.

The square root of 438721413 is about 20945.6776686743. The cubic root of 438721413 is about 759.8530492657.

The spelling of 438721413 in words is "four hundred thirty-eight million, seven hundred twenty-one thousand, four hundred thirteen".