538811669 has 12 divisors (see below), whose sum is σ = 598124940. Its totient is φ = 484968000.

The previous prime is 538811657. The next prime is 538811699. The reversal of 538811669 is 966118835.

It can be written as a sum of positive squares in 2 ways, for example, as 407434225 + 131377444 = 20185^2 + 11462^2 .

It is not a de Polignac number, because 538811669 - 2¹² = 538807573 is a prime.

It is a super-2 number, since 2×538811669² = 580636029301131122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538811699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9824 + ... + 34265.

It is an arithmetic number, because the mean of its divisors is an integer number (49843745).

Almost surely, 2^538811669 is an apocalyptic number.

It is an amenable number.

538811669 is a deficient number, since it is larger than the sum of its proper divisors (59313271).

538811669 is a wasteful number, since it uses less digits than its factorization.

538811669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44212 (or 44201 counting only the distinct ones).

The product of its digits is 311040, while the sum is 47.

The square root of 538811669 is about 23212.3171829096. The cubic root of 538811669 is about 813.7275080125.

The spelling of 538811669 in words is "five hundred thirty-eight million, eight hundred eleven thousand, six hundred sixty-nine".