538921477 has 2 divisors, whose sum is σ = 538921478. Its totient is φ = 538921476.

The previous prime is 538921459. The next prime is 538921483. The reversal of 538921477 is 774129835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424730881 + 114190596 = 20609^2 + 10686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538921477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538921177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269460738 + 269460739.

It is an arithmetic number, because the mean of its divisors is an integer number (269460739).

Almost surely, 2^538921477 is an apocalyptic number.

It is an amenable number.

538921477 is a deficient number, since it is larger than the sum of its proper divisors (1).

538921477 is an equidigital number, since it uses as much as digits as its factorization.

538921477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 46.

The square root of 538921477 is about 23214.6823583697. The cubic root of 538921477 is about 813.7827825645.

The spelling of 538921477 in words is "five hundred thirty-eight million, nine hundred twenty-one thousand, four hundred seventy-seven".