538609777 has 12 divisors (see below), whose sum is σ = 582723120. Its totient is φ = 496447056.

The previous prime is 538609751. The next prime is 538609781. The reversal of 538609777 is 777906835.

It is a happy number.

It is not a de Polignac number, because 538609777 - 2¹⁹ = 538085489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538609727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15658 + ... + 36364.

It is an arithmetic number, because the mean of its divisors is an integer number (48560260).

Almost surely, 2^538609777 is an apocalyptic number.

It is an amenable number.

538609777 is a deficient number, since it is larger than the sum of its proper divisors (44113343).

538609777 is a wasteful number, since it uses less digits than its factorization.

538609777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20800 (or 20763 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 52.

The square root of 538609777 is about 23207.9679636111. The cubic root of 538609777 is about 813.6258611187.

The spelling of 538609777 in words is "five hundred thirty-eight million, six hundred nine thousand, seven hundred seventy-seven".