428368973 has 2 divisors, whose sum is σ = 428368974. Its totient is φ = 428368972.

The previous prime is 428368961. The next prime is 428368979. The reversal of 428368973 is 379863824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286354084 + 142014889 = 16922^2 + 11917^2 .

It is a cyclic number.

It is not a de Polignac number, because 428368973 - 2⁴ = 428368957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428368979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214184486 + 214184487.

It is an arithmetic number, because the mean of its divisors is an integer number (214184487).

Almost surely, 2^428368973 is an apocalyptic number.

It is an amenable number.

428368973 is a deficient number, since it is larger than the sum of its proper divisors (1).

428368973 is an equidigital number, since it uses as much as digits as its factorization.

428368973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 428368973 is about 20697.0764360573. The cubic root of 428368973 is about 753.8287017609.

The spelling of 428368973 in words is "four hundred twenty-eight million, three hundred sixty-eight thousand, nine hundred seventy-three".