23408819 has 6 divisors (see below), whose sum is σ = 27230724. Its totient is φ = 20064660.

The previous prime is 23408809. The next prime is 23408821. The reversal of 23408819 is 91880432.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-23408819 is a prime.

It is a super-2 number, since 2×23408819² = 1095945613949522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23408809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238817 + ... + 238914.

It is an arithmetic number, because the mean of its divisors is an integer number (4538454).

Almost surely, 2^23408819 is an apocalyptic number.

23408819 is a deficient number, since it is larger than the sum of its proper divisors (3821905).

23408819 is an equidigital number, since it uses as much as digits as its factorization.

23408819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477745 (or 477738 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 23408819 is about 4838.2661150458. The cubic root of 23408819 is about 286.0617785920.

The spelling of 23408819 in words is "twenty-three million, four hundred eight thousand, eight hundred nineteen".