539623397 has 2 divisors, whose sum is σ = 539623398. Its totient is φ = 539623396.

The previous prime is 539623393. The next prime is 539623439. The reversal of 539623397 is 793326935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498227041 + 41396356 = 22321^2 + 6434^2 .

It is a cyclic number.

It is not a de Polignac number, because 539623397 - 2² = 539623393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (539623391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269811698 + 269811699.

It is an arithmetic number, because the mean of its divisors is an integer number (269811699).

Almost surely, 2^539623397 is an apocalyptic number.

It is an amenable number.

539623397 is a deficient number, since it is larger than the sum of its proper divisors (1).

539623397 is an equidigital number, since it uses as much as digits as its factorization.

539623397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 47.

The square root of 539623397 is about 23229.7954575584. The cubic root of 539623397 is about 814.1359339498.

The spelling of 539623397 in words is "five hundred thirty-nine million, six hundred twenty-three thousand, three hundred ninety-seven".