2439248561 has 4 divisors (see below), whose sum is σ = 2446618224. Its totient is φ = 2431878900.

The previous prime is 2439248533. The next prime is 2439248641. The reversal of 2439248561 is 1658429342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1658429342 = 2 ⋅829214671.

It is a cyclic number.

It is not a de Polignac number, because 2439248561 - 2¹⁰ = 2439247537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2439248501) 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 in 3 ways as a sum of consecutive naturals, for example, 3684335 + ... + 3684996.

It is an arithmetic number, because the mean of its divisors is an integer number (611654556).

Almost surely, 2^2439248561 is an apocalyptic number.

It is an amenable number.

2439248561 is a deficient number, since it is larger than the sum of its proper divisors (7369663).

2439248561 is an equidigital number, since it uses as much as digits as its factorization.

2439248561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7369662.

The product of its digits is 414720, while the sum is 44.

The square root of 2439248561 is about 49388.7493362608. The cubic root of 2439248561 is about 1346.1248838158.

The spelling of 2439248561 in words is "two billion, four hundred thirty-nine million, two hundred forty-eight thousand, five hundred sixty-one".