437665349 has 6 divisors (see below), whose sum is σ = 481070310. Its totient is φ = 397877480.

The previous prime is 437665343. The next prime is 437665351. The reversal of 437665349 is 943566734.

It can be written as a sum of positive squares in only one way, i.e., 295221124 + 142444225 = 17182^2 + 11935^2 .

It is a de Polignac number, because none of the positive numbers 2^k-437665349 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 (437665343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1808414 + ... + 1808655.

It is an arithmetic number, because the mean of its divisors is an integer number (80178385).

Almost surely, 2^437665349 is an apocalyptic number.

It is an amenable number.

437665349 is a deficient number, since it is larger than the sum of its proper divisors (43404961).

437665349 is a wasteful number, since it uses less digits than its factorization.

437665349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617091 (or 3617080 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 47.

The square root of 437665349 is about 20920.4528870672. The cubic root of 437665349 is about 759.2428684373.

The spelling of 437665349 in words is "four hundred thirty-seven million, six hundred sixty-five thousand, three hundred forty-nine".