2539459477 has 2 divisors, whose sum is σ = 2539459478. Its totient is φ = 2539459476.

The previous prime is 2539459427. The next prime is 2539459487. The reversal of 2539459477 is 7749549352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1580380516 + 959078961 = 39754^2 + 30969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2539459477 is a prime.

It is a super-2 number, since 2×2539459477² = 12897708870650227058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2539459427) 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, 1269729738 + 1269729739.

It is an arithmetic number, because the mean of its divisors is an integer number (1269729739).

Almost surely, 2^2539459477 is an apocalyptic number.

It is an amenable number.

2539459477 is a deficient number, since it is larger than the sum of its proper divisors (1).

2539459477 is an equidigital number, since it uses as much as digits as its factorization.

2539459477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9525600, while the sum is 55.

The square root of 2539459477 is about 50393.0498878566. The cubic root of 2539459477 is about 1364.3121988491.

The spelling of 2539459477 in words is "two billion, five hundred thirty-nine million, four hundred fifty-nine thousand, four hundred seventy-seven".