407828557 has 2 divisors, whose sum is σ = 407828558. Its totient is φ = 407828556.

The previous prime is 407828549. The next prime is 407828567. The reversal of 407828557 is 755828704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331458436 + 76370121 = 18206^2 + 8739^2 .

It is a cyclic number.

It is not a de Polignac number, because 407828557 - 2³ = 407828549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (407828567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203914278 + 203914279.

It is an arithmetic number, because the mean of its divisors is an integer number (203914279).

Almost surely, 2^407828557 is an apocalyptic number.

It is an amenable number.

407828557 is a deficient number, since it is larger than the sum of its proper divisors (1).

407828557 is an equidigital number, since it uses as much as digits as its factorization.

407828557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 627200, while the sum is 46.

The square root of 407828557 is about 20194.7655841805. The cubic root of 407828557 is about 741.5820529711.

The spelling of 407828557 in words is "four hundred seven million, eight hundred twenty-eight thousand, five hundred fifty-seven".