20914903 has 2 divisors, whose sum is σ = 20914904. Its totient is φ = 20914902.

The previous prime is 20914891. The next prime is 20914919. The reversal of 20914903 is 30941902.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20914903 - 2⁹ = 20914391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20914603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10457451 + 10457452.

It is an arithmetic number, because the mean of its divisors is an integer number (10457452).

Almost surely, 2^20914903 is an apocalyptic number.

20914903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20914903 is an equidigital number, since it uses as much as digits as its factorization.

20914903 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20914903 is about 4573.2814258473. The cubic root of 20914903 is about 275.5192525437.

The spelling of 20914903 in words is "twenty million, nine hundred fourteen thousand, nine hundred three".