7428929 has 2 divisors, whose sum is σ = 7428930. Its totient is φ = 7428928.

The previous prime is 7428917. The next prime is 7428937. The reversal of 7428929 is 9298247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4739329 + 2689600 = 2177^2 + 1640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7428929 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 7⁵ + 4⁵ + 2⁷ + 8⁷ + 9⁴ + 2¹⁹ + 9⁷ .

It is not a weakly prime, because it can be changed into another prime (7428529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3714464 + 3714465.

It is an arithmetic number, because the mean of its divisors is an integer number (3714465).

Almost surely, 2^7428929 is an apocalyptic number.

It is an amenable number.

7428929 is a deficient number, since it is larger than the sum of its proper divisors (1).

7428929 is an equidigital number, since it uses as much as digits as its factorization.

7428929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 7428929 is about 2725.6061711113. The cubic root of 7428929 is about 195.1231218945.

The spelling of 7428929 in words is "seven million, four hundred twenty-eight thousand, nine hundred twenty-nine".