398079061 has 2 divisors, whose sum is σ = 398079062. Its totient is φ = 398079060.

The previous prime is 398079053. The next prime is 398079083. The reversal of 398079061 is 160970893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395811025 + 2268036 = 19895^2 + 1506^2 .

It is a cyclic number.

It is not a de Polignac number, because 398079061 - 2³ = 398079053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398078999 and 398079017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398029061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199039530 + 199039531.

It is an arithmetic number, because the mean of its divisors is an integer number (199039531).

Almost surely, 2^398079061 is an apocalyptic number.

It is an amenable number.

398079061 is a deficient number, since it is larger than the sum of its proper divisors (1).

398079061 is an equidigital number, since it uses as much as digits as its factorization.

398079061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 398079061 is about 19951.9187297864. The cubic root of 398079061 is about 735.6249399745.

The spelling of 398079061 in words is "three hundred ninety-eight million, seventy-nine thousand, sixty-one".