24791009 has 2 divisors, whose sum is σ = 24791010. Its totient is φ = 24791008.

The previous prime is 24791003. The next prime is 24791047. The reversal of 24791009 is 90019742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24720784 + 70225 = 4972^2 + 265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24791009 is a prime.

It is a super-2 number, since 2×24791009² = 1229188254476162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24791003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12395504 + 12395505.

It is an arithmetic number, because the mean of its divisors is an integer number (12395505).

Almost surely, 2^24791009 is an apocalyptic number.

It is an amenable number.

24791009 is a deficient number, since it is larger than the sum of its proper divisors (1).

24791009 is an equidigital number, since it uses as much as digits as its factorization.

24791009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 24791009 is about 4979.0570392395. The cubic root of 24791009 is about 291.5847015758.

The spelling of 24791009 in words is "twenty-four million, seven hundred ninety-one thousand, nine".