23898947 has 4 divisors (see below), whose sum is σ = 23974656. Its totient is φ = 23823240.

The previous prime is 23898943. The next prime is 23899009. The reversal of 23898947 is 74989832.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23898947 - 2² = 23898943 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23898895 and 23898904.

It is not an unprimeable number, because it can be changed into a prime (23898943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37379 + ... + 38012.

It is an arithmetic number, because the mean of its divisors is an integer number (5993664).

Almost surely, 2^23898947 is an apocalyptic number.

23898947 is a deficient number, since it is larger than the sum of its proper divisors (75709).

23898947 is an equidigital number, since it uses as much as digits as its factorization.

23898947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75708.

The product of its digits is 870912, while the sum is 50.

The square root of 23898947 is about 4888.6549274826. The cubic root of 23898947 is about 288.0445010645.

The spelling of 23898947 in words is "twenty-three million, eight hundred ninety-eight thousand, nine hundred forty-seven".