428972903 has 2 divisors, whose sum is σ = 428972904. Its totient is φ = 428972902.

The previous prime is 428972867. The next prime is 428972911. The reversal of 428972903 is 309279824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428972903 - 2¹² = 428968807 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428972933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214486451 + 214486452.

It is an arithmetic number, because the mean of its divisors is an integer number (214486452).

Almost surely, 2^428972903 is an apocalyptic number.

428972903 is a deficient number, since it is larger than the sum of its proper divisors (1).

428972903 is an equidigital number, since it uses as much as digits as its factorization.

428972903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 428972903 is about 20711.6610391345. The cubic root of 428972903 is about 754.1827936901.

The spelling of 428972903 in words is "four hundred twenty-eight million, nine hundred seventy-two thousand, nine hundred three".