538722769 has 4 divisors (see below), whose sum is σ = 580162996. Its totient is φ = 497282544.

The previous prime is 538722757. The next prime is 538722773. The reversal of 538722769 is 967227835.

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 117939600 + 420783169 = 10860^2 + 20513^2 .

It is a cyclic number.

It is not a de Polignac number, because 538722769 - 2¹³ = 538714577 is a prime.

It is a super-2 number, since 2×538722769² = 580444443678054722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538722869) 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, 20720094 + ... + 20720119.

It is an arithmetic number, because the mean of its divisors is an integer number (145040749).

Almost surely, 2^538722769 is an apocalyptic number.

It is an amenable number.

538722769 is a deficient number, since it is larger than the sum of its proper divisors (41440227).

538722769 is a wasteful number, since it uses less digits than its factorization.

538722769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41440226.

The product of its digits is 1270080, while the sum is 49.

The square root of 538722769 is about 23210.4021723020. The cubic root of 538722769 is about 813.6827525141.

The spelling of 538722769 in words is "five hundred thirty-eight million, seven hundred twenty-two thousand, seven hundred sixty-nine".