428997337 has 2 divisors, whose sum is σ = 428997338. Its totient is φ = 428997336.

The previous prime is 428997299. The next prime is 428997343. The reversal of 428997337 is 733799824.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 358117776 + 70879561 = 18924^2 + 8419^2 .

It is a cyclic number.

It is not a de Polignac number, because 428997337 - 2⁷ = 428997209 is a prime.

It is not a weakly prime, because it can be changed into another prime (428997367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214498668 + 214498669.

It is an arithmetic number, because the mean of its divisors is an integer number (214498669).

Almost surely, 2^428997337 is an apocalyptic number.

It is an amenable number.

428997337 is a deficient number, since it is larger than the sum of its proper divisors (1).

428997337 is an equidigital number, since it uses as much as digits as its factorization.

428997337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 52.

The square root of 428997337 is about 20712.2508916824. The cubic root of 428997337 is about 754.1971126617.

The spelling of 428997337 in words is "four hundred twenty-eight million, nine hundred ninety-seven thousand, three hundred thirty-seven".