437974813 has 4 divisors (see below), whose sum is σ = 438026940. Its totient is φ = 437922688.

The previous prime is 437974799. The next prime is 437974837. The reversal of 437974813 is 318479734.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 254019844 + 183954969 = 15938^2 + 13563^2 .

It is a cyclic number.

It is not a de Polignac number, because 437974813 - 2²⁵ = 404420381 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 (437972813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10270 + ... + 31327.

It is an arithmetic number, because the mean of its divisors is an integer number (109506735).

Almost surely, 2^437974813 is an apocalyptic number.

It is an amenable number.

437974813 is a deficient number, since it is larger than the sum of its proper divisors (52127).

437974813 is a wasteful number, since it uses less digits than its factorization.

437974813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52126.

The product of its digits is 508032, while the sum is 46.

The square root of 437974813 is about 20927.8477870994. The cubic root of 437974813 is about 759.4217745195.

The spelling of 437974813 in words is "four hundred thirty-seven million, nine hundred seventy-four thousand, eight hundred thirteen".