23409475 has 6 divisors (see below), whose sum is σ = 29027780. Its totient is φ = 18727560.

The previous prime is 23409473. The next prime is 23409479. The reversal of 23409475 is 57490432.

It is not a de Polignac number, because 23409475 - 2¹ = 23409473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23409475.

It is not an unprimeable number, because it can be changed into a prime (23409473) 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, 468165 + ... + 468214.

Almost surely, 2^23409475 is an apocalyptic number.

23409475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

23409475 is a deficient number, since it is larger than the sum of its proper divisors (5618305).

23409475 is an equidigital number, since it uses as much as digits as its factorization.

23409475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936389 (or 936384 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 23409475 is about 4838.3339074520. Note that the first 3 decimals coincide. The cubic root of 23409475 is about 286.0644507298.

The spelling of 23409475 in words is "twenty-three million, four hundred nine thousand, four hundred seventy-five".