23997447 has 6 divisors (see below), whose sum is σ = 34662992. Its totient is φ = 15998292.

The previous prime is 23997443. The next prime is 23997451. The reversal of 23997447 is 74479932.

It is an interprime number because it is at equal distance from previous prime (23997443) and next prime (23997451).

It is not a de Polignac number, because 23997447 - 2² = 23997443 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 (23997443) 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, 1333183 + ... + 1333200.

Almost surely, 2^23997447 is an apocalyptic number.

23997447 is a deficient number, since it is larger than the sum of its proper divisors (10665545).

23997447 is a wasteful number, since it uses less digits than its factorization.

23997447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666389 (or 2666386 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 23997447 is about 4898.7189141652. The cubic root of 23997447 is about 288.4396857456.

The spelling of 23997447 in words is "twenty-three million, nine hundred ninety-seven thousand, four hundred forty-seven".