2447172487 has 2 divisors, whose sum is σ = 2447172488. Its totient is φ = 2447172486.

The previous prime is 2447172461. The next prime is 2447172499. The reversal of 2447172487 is 7842717442.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2447172487 - 2³¹ = 299688839 is a prime.

It is a super-2 number, since 2×2447172487² = 11977306362259530338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2447179487) 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, 1223586243 + 1223586244.

It is an arithmetic number, because the mean of its divisors is an integer number (1223586244).

Almost surely, 2^2447172487 is an apocalyptic number.

2447172487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2447172487 is an equidigital number, since it uses as much as digits as its factorization.

2447172487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 702464, while the sum is 46.

The square root of 2447172487 is about 49468.9042429686. The cubic root of 2447172487 is about 1347.5809421491.

The spelling of 2447172487 in words is "two billion, four hundred forty-seven million, one hundred seventy-two thousand, four hundred eighty-seven".