10439399 has 2 divisors, whose sum is σ = 10439400. Its totient is φ = 10439398.

The previous prime is 10439393. The next prime is 10439413. The reversal of 10439399 is 99393401.

It is a weak prime.

It is an emirp because it is prime and its reverse (99393401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10439399 - 2⁴ = 10439383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10439393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5219699 + 5219700.

It is an arithmetic number, because the mean of its divisors is an integer number (5219700).

Almost surely, 2^10439399 is an apocalyptic number.

10439399 is a deficient number, since it is larger than the sum of its proper divisors (1).

10439399 is an equidigital number, since it uses as much as digits as its factorization.

10439399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 10439399 is about 3231.0058805270. The cubic root of 10439399 is about 218.5538689363.

Subtracting from 10439399 its sum of digits (38), we obtain a square (10439361 = 3231²).

The spelling of 10439399 in words is "ten million, four hundred thirty-nine thousand, three hundred ninety-nine".