407928797 has 2 divisors, whose sum is σ = 407928798. Its totient is φ = 407928796.

The previous prime is 407928793. The next prime is 407928809. The reversal of 407928797 is 797829704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366377881 + 41550916 = 19141^2 + 6446^2 .

It is a cyclic number.

It is not a de Polignac number, because 407928797 - 2² = 407928793 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 (407928793) 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, 203964398 + 203964399.

It is an arithmetic number, because the mean of its divisors is an integer number (203964399).

Almost surely, 2^407928797 is an apocalyptic number.

It is an amenable number.

407928797 is a deficient number, since it is larger than the sum of its proper divisors (1).

407928797 is an equidigital number, since it uses as much as digits as its factorization.

407928797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The square root of 407928797 is about 20197.2472629316. The cubic root of 407928797 is about 741.6428057018.

The spelling of 407928797 in words is "four hundred seven million, nine hundred twenty-eight thousand, seven hundred ninety-seven".