1229903 has 2 divisors, whose sum is σ = 1229904. Its totient is φ = 1229902.

The previous prime is 1229897. The next prime is 1229911. The reversal of 1229903 is 3099221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1229903 - 2⁸ = 1229647 is a prime.

It is a super-2 number, since 2×1229903² = 3025322778818, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614951 + 614952.

It is an arithmetic number, because the mean of its divisors is an integer number (614952).

2^1229903 is an apocalyptic number.

1229903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229903 is an equidigital number, since it uses as much as digits as its factorization.

1229903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1229903 is about 1109.0099188015. The cubic root of 1229903 is about 107.1413103692.

The spelling of 1229903 in words is "one million, two hundred twenty-nine thousand, nine hundred three".