23408429 has 4 divisors (see below), whose sum is σ = 25536480. Its totient is φ = 21280380.

The previous prime is 23408419. The next prime is 23408447. The reversal of 23408429 is 92480432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23408429 - 2²⁴ = 6631213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23408395 and 23408404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23408419) 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, 1064009 + ... + 1064030.

It is an arithmetic number, because the mean of its divisors is an integer number (6384120).

Almost surely, 2^23408429 is an apocalyptic number.

It is an amenable number.

23408429 is a deficient number, since it is larger than the sum of its proper divisors (2128051).

23408429 is a wasteful number, since it uses less digits than its factorization.

23408429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128050.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 23408429 is about 4838.2258111833. The cubic root of 23408429 is about 286.0601899498.

The spelling of 23408429 in words is "twenty-three million, four hundred eight thousand, four hundred twenty-nine".