398020741 has 2 divisors, whose sum is σ = 398020742. Its totient is φ = 398020740.

The previous prime is 398020709. The next prime is 398020751. The reversal of 398020741 is 147020893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396209025 + 1811716 = 19905^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 398020741 - 2⁵ = 398020709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398020697 and 398020706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398020751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199010370 + 199010371.

It is an arithmetic number, because the mean of its divisors is an integer number (199010371).

Almost surely, 2^398020741 is an apocalyptic number.

It is an amenable number.

398020741 is a deficient number, since it is larger than the sum of its proper divisors (1).

398020741 is an equidigital number, since it uses as much as digits as its factorization.

398020741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 398020741 is about 19950.4571626818. The cubic root of 398020741 is about 735.5890143290.

The spelling of 398020741 in words is "three hundred ninety-eight million, twenty thousand, seven hundred forty-one".