24919 has 2 divisors, whose sum is σ = 24920. Its totient is φ = 24918.

The previous prime is 24917. The next prime is 24923. The reversal of 24919 is 91942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 24919 - 2¹ = 24917 is a prime.

It is a super-2 number, since 2×24919² = 1241913122, which contains 22 as substring.

Together with 24917, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 24893 and 24902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12459 + 12460.

It is an arithmetic number, because the mean of its divisors is an integer number (12460).

2²⁴⁹¹⁹ is an apocalyptic number.

24919 is a deficient number, since it is larger than the sum of its proper divisors (1).

24919 is an equidigital number, since it uses as much as digits as its factorization.

24919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 24919 is about 157.8575307041. The cubic root of 24919 is about 29.2085638233.

It can be divided in two parts, 2491 and 9, that added together give a square (2500 = 50²).

The spelling of 24919 in words is "twenty-four thousand, nine hundred nineteen".