10247999 has 4 divisors (see below), whose sum is σ = 10326360. Its totient is φ = 10169640.

The previous prime is 10247989. The next prime is 10248013. The reversal of 10247999 is 99974201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99974201 = 463 ⋅215927.

It is a cyclic number.

It is not a de Polignac number, because 10247999 - 2⁴ = 10247983 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 (10247989) 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, 38984 + ... + 39245.

It is an arithmetic number, because the mean of its divisors is an integer number (2581590).

Almost surely, 2^10247999 is an apocalyptic number.

10247999 is a deficient number, since it is larger than the sum of its proper divisors (78361).

10247999 is an equidigital number, since it uses as much as digits as its factorization.

10247999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78360.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 10247999 is about 3201.2495997657. The cubic root of 10247999 is about 217.2099379092.

The spelling of 10247999 in words is "ten million, two hundred forty-seven thousand, nine hundred ninety-nine".