401670629 has 2 divisors, whose sum is σ = 401670630. Its totient is φ = 401670628.

The previous prime is 401670613. The next prime is 401670671. The reversal of 401670629 is 926076104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364886404 + 36784225 = 19102^2 + 6065^2 .

It is a cyclic number.

It is not a de Polignac number, because 401670629 - 2⁴ = 401670613 is a prime.

It is a super-2 number, since 2×401670629² = 322678588402511282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401675629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200835314 + 200835315.

It is an arithmetic number, because the mean of its divisors is an integer number (200835315).

Almost surely, 2^401670629 is an apocalyptic number.

It is an amenable number.

401670629 is a deficient number, since it is larger than the sum of its proper divisors (1).

401670629 is an equidigital number, since it uses as much as digits as its factorization.

401670629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 401670629 is about 20041.7222064373. The cubic root of 401670629 is about 737.8306499344.

The spelling of 401670629 in words is "four hundred one million, six hundred seventy thousand, six hundred twenty-nine".