16903489 has 2 divisors, whose sum is σ = 16903490. Its totient is φ = 16903488.

The previous prime is 16903427. The next prime is 16903493. The reversal of 16903489 is 98430961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15737089 + 1166400 = 3967^2 + 1080^2 .

It is a cyclic number.

It is not a de Polignac number, because 16903489 - 2²³ = 8514881 is a prime.

It is not a weakly prime, because it can be changed into another prime (16903189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8451744 + 8451745.

It is an arithmetic number, because the mean of its divisors is an integer number (8451745).

Almost surely, 2^16903489 is an apocalyptic number.

It is an amenable number.

16903489 is a deficient number, since it is larger than the sum of its proper divisors (1).

16903489 is an equidigital number, since it uses as much as digits as its factorization.

16903489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 16903489 is about 4111.3852896560. The cubic root of 16903489 is about 256.6406530859.

The spelling of 16903489 in words is "sixteen million, nine hundred three thousand, four hundred eighty-nine".