13899503 has 2 divisors, whose sum is σ = 13899504. Its totient is φ = 13899502.

The previous prime is 13899491. The next prime is 13899517. The reversal of 13899503 is 30599831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13899503 - 2⁸ = 13899247 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13899593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6949751 + 6949752.

It is an arithmetic number, because the mean of its divisors is an integer number (6949752).

Almost surely, 2^13899503 is an apocalyptic number.

13899503 is a deficient number, since it is larger than the sum of its proper divisors (1).

13899503 is an equidigital number, since it uses as much as digits as its factorization.

13899503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 13899503 is about 3728.2037229744. The cubic root of 13899503 is about 240.4361455816.

The spelling of 13899503 in words is "thirteen million, eight hundred ninety-nine thousand, five hundred three".