538398437 has 4 divisors (see below), whose sum is σ = 541373196. Its totient is φ = 535423680.

The previous prime is 538398409. The next prime is 538398451. The reversal of 538398437 is 734893835.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 282206401 + 256192036 = 16799^2 + 16006^2 .

It is a cyclic number.

It is not a de Polignac number, because 538398437 - 2⁸ = 538398181 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 (538398457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487108 + ... + 1487469.

It is an arithmetic number, because the mean of its divisors is an integer number (135343299).

Almost surely, 2^538398437 is an apocalyptic number.

It is an amenable number.

538398437 is a deficient number, since it is larger than the sum of its proper divisors (2974759).

538398437 is a wasteful number, since it uses less digits than its factorization.

538398437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974758.

The product of its digits is 2177280, while the sum is 50.

The square root of 538398437 is about 23203.4143392734. The cubic root of 538398437 is about 813.5194302097.

It can be divided in two parts, 538398 and 437, that added together give a palindrome (538835).

The spelling of 538398437 in words is "five hundred thirty-eight million, three hundred ninety-eight thousand, four hundred thirty-seven".