438006445 has 8 divisors (see below), whose sum is σ = 556525944. Its totient is φ = 329793024.

The previous prime is 438006433. The next prime is 438006461. The reversal of 438006445 is 544600834.

It can be written as a sum of positive squares in 4 ways, for example, as 133957476 + 304048969 = 11574^2 + 17437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 438006445 - 2¹⁵ = 437973677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 438006445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2576424 + ... + 2576593.

It is an arithmetic number, because the mean of its divisors is an integer number (69565743).

Almost surely, 2^438006445 is an apocalyptic number.

It is an amenable number.

438006445 is a deficient number, since it is larger than the sum of its proper divisors (118519499).

438006445 is a wasteful number, since it uses less digits than its factorization.

438006445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153039.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 438006445 is about 20928.6035128959. The cubic root of 438006445 is about 759.4400567362.

The spelling of 438006445 in words is "four hundred thirty-eight million, six thousand, four hundred forty-five".