428386797 has 6 divisors (see below), whose sum is σ = 618780942. Its totient is φ = 285591192.

The previous prime is 428386781. The next prime is 428386801. The reversal of 428386797 is 797683824.

It can be written as a sum of positive squares in only one way, i.e., 428241636 + 145161 = 20694^2 + 381^2 .

It is not a de Polignac number, because 428386797 - 2⁴ = 428386781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428386747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23799258 + ... + 23799275.

It is an arithmetic number, because the mean of its divisors is an integer number (103130157).

Almost surely, 2^428386797 is an apocalyptic number.

It is an amenable number.

428386797 is a deficient number, since it is larger than the sum of its proper divisors (190394145).

428386797 is a wasteful number, since it uses less digits than its factorization.

428386797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47598539 (or 47598536 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 428386797 is about 20697.5070237940. The cubic root of 428386797 is about 753.8391569660.

The spelling of 428386797 in words is "four hundred twenty-eight million, three hundred eighty-six thousand, seven hundred ninety-seven".