398967629 has 2 divisors, whose sum is σ = 398967630. Its totient is φ = 398967628.

The previous prime is 398967607. The next prime is 398967659. The reversal of 398967629 is 926769893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302829604 + 96138025 = 17402^2 + 9805^2 .

It is a cyclic number.

It is not a de Polignac number, because 398967629 - 2²⁸ = 130532173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398967659) 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, 199483814 + 199483815.

It is an arithmetic number, because the mean of its divisors is an integer number (199483815).

Almost surely, 2^398967629 is an apocalyptic number.

It is an amenable number.

398967629 is a deficient number, since it is larger than the sum of its proper divisors (1).

398967629 is an equidigital number, since it uses as much as digits as its factorization.

398967629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 59.

The square root of 398967629 is about 19974.1740505083. The cubic root of 398967629 is about 736.1718723973.

The spelling of 398967629 in words is "three hundred ninety-eight million, nine hundred sixty-seven thousand, six hundred twenty-nine".