2409791243 has 4 divisors (see below), whose sum is σ = 2428186728. Its totient is φ = 2391395760.

The previous prime is 2409791239. The next prime is 2409791249. The reversal of 2409791243 is 3421979042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3421979042 = 2 ⋅1710989521.

It is a cyclic number.

It is not a de Polignac number, because 2409791243 - 2² = 2409791239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2409791243.

It is not an unprimeable number, because it can be changed into a prime (2409791249) 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, 9197546 + ... + 9197807.

It is an arithmetic number, because the mean of its divisors is an integer number (607046682).

Almost surely, 2^2409791243 is an apocalyptic number.

2409791243 is a deficient number, since it is larger than the sum of its proper divisors (18395485).

2409791243 is a wasteful number, since it uses less digits than its factorization.

2409791243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18395484.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 2409791243 is about 49089.6245962423. The cubic root of 2409791243 is about 1340.6841466348.

The spelling of 2409791243 in words is "two billion, four hundred nine million, seven hundred ninety-one thousand, two hundred forty-three".