2479730909 has 4 divisors (see below), whose sum is σ = 2496153120. Its totient is φ = 2463308700.

The previous prime is 2479730887. The next prime is 2479730917. The reversal of 2479730909 is 9090379742.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2479730909 is a prime.

It is a super-2 number, since 2×2479730909² = 12298130762099932562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2479730969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8210879 + ... + 8211180.

It is an arithmetic number, because the mean of its divisors is an integer number (624038280).

Almost surely, 2^2479730909 is an apocalyptic number.

It is an amenable number.

2479730909 is a deficient number, since it is larger than the sum of its proper divisors (16422211).

2479730909 is a wasteful number, since it uses less digits than its factorization.

2479730909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16422210.

The product of its (nonzero) digits is 857304, while the sum is 50.

The square root of 2479730909 is about 49796.8965800079. The cubic root of 2479730909 is about 1353.5309321767.

The spelling of 2479730909 in words is "two billion, four hundred seventy-nine million, seven hundred thirty thousand, nine hundred nine".