398077 has 2 divisors, whose sum is σ = 398078. Its totient is φ = 398076.

The previous prime is 398063. The next prime is 398087. The reversal of 398077 is 770893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337561 + 60516 = 581^2 + 246^2 .

It is a cyclic number.

It is not a de Polignac number, because 398077 - 2¹¹ = 396029 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398077.

It is not a weakly prime, because it can be changed into another prime (398087) 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, 199038 + 199039.

It is an arithmetic number, because the mean of its divisors is an integer number (199039).

2³⁹⁸⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

398077 is a deficient number, since it is larger than the sum of its proper divisors (1).

398077 is an equidigital number, since it uses as much as digits as its factorization.

398077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 398077 is about 630.9334354748. The cubic root of 398077 is about 73.5623670440.

Subtracting 398077 from its reverse (770893), we obtain a triangular number (372816 = T₈₆₃).

The spelling of 398077 in words is "three hundred ninety-eight thousand, seventy-seven".