438409013 has 16 divisors (see below), whose sum is σ = 510455424. Its totient is φ = 368746560.

The previous prime is 438408991. The next prime is 438409031. The reversal of 438409013 is 310904834.

It is not a de Polignac number, because 438409013 - 2⁸ = 438408757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438409033) 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, 232631 + ... + 234507.

It is an arithmetic number, because the mean of its divisors is an integer number (31903464).

Almost surely, 2^438409013 is an apocalyptic number.

It is an amenable number.

438409013 is a deficient number, since it is larger than the sum of its proper divisors (72046411).

438409013 is a wasteful number, since it uses less digits than its factorization.

438409013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 438409013 is about 20938.2189548204. The cubic root of 438409013 is about 759.6726504591.

The spelling of 438409013 in words is "four hundred thirty-eight million, four hundred nine thousand, thirteen".