23449020447 has 4 divisors (see below), whose sum is σ = 31265360600. Its totient is φ = 15632680296.

The previous prime is 23449020409. The next prime is 23449020481. The reversal of 23449020447 is 74402094432.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23449020447 - 2⁶ = 23449020383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23449025447) 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, 3908170072 + ... + 3908170077.

It is an arithmetic number, because the mean of its divisors is an integer number (7816340150).

Almost surely, 2^23449020447 is an apocalyptic number.

23449020447 is a deficient number, since it is larger than the sum of its proper divisors (7816340153).

23449020447 is an equidigital number, since it uses as much as digits as its factorization.

23449020447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7816340152.

The product of its (nonzero) digits is 193536, while the sum is 39.

The spelling of 23449020447 in words is "twenty-three billion, four hundred forty-nine million, twenty thousand, four hundred forty-seven".