10240399 has 8 divisors (see below), whose sum is σ = 11127312. Its totient is φ = 9367680.

The previous prime is 10240397. The next prime is 10240423. The reversal of 10240399 is 99304201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10240399 - 2¹ = 10240397 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 (10240397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2017 + ... + 4954.

It is an arithmetic number, because the mean of its divisors is an integer number (1390914).

Almost surely, 2^10240399 is an apocalyptic number.

10240399 is a deficient number, since it is larger than the sum of its proper divisors (886913).

10240399 is a wasteful number, since it uses less digits than its factorization.

10240399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7097.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 10240399 is about 3200.0623431427. The cubic root of 10240399 is about 217.1562297405.

The spelling of 10240399 in words is "ten million, two hundred forty thousand, three hundred ninety-nine".