23424279449 has 18 divisors (see below), whose sum is σ = 24275991402. Its totient is φ = 22602086400.

The previous prime is 23424279443. The next prime is 23424279457. The reversal of 23424279449 is 94497242432.

It can be written as a sum of positive squares in 9 ways, for example, as 17501437849 + 5922841600 = 132293^2 + 76960^2 .

It is not a de Polignac number, because 23424279449 - 2⁴ = 23424279433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23424279397 and 23424279406.

It is not an unprimeable number, because it can be changed into a prime (23424279443) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15815789 + ... + 15817269.

It is an arithmetic number, because the mean of its divisors is an integer number (1348666189).

Almost surely, 2^23424279449 is an apocalyptic number.

It is an amenable number.

23424279449 is a deficient number, since it is larger than the sum of its proper divisors (851711953).

23424279449 is an frugal number, since it uses more digits than its factorization.

23424279449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757 (or 1619 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 50.

The spelling of 23424279449 in words is "twenty-three billion, four hundred twenty-four million, two hundred seventy-nine thousand, four hundred forty-nine".