401429429 has 2 divisors, whose sum is σ = 401429430. Its totient is φ = 401429428.

The previous prime is 401429407. The next prime is 401429453. The reversal of 401429429 is 924924104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395930404 + 5499025 = 19898^2 + 2345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401429429 is a prime.

It is a super-2 number, since 2×401429429² = 322291172934532082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401429489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200714714 + 200714715.

It is an arithmetic number, because the mean of its divisors is an integer number (200714715).

Almost surely, 2^401429429 is an apocalyptic number.

It is an amenable number.

401429429 is a deficient number, since it is larger than the sum of its proper divisors (1).

401429429 is an equidigital number, since it uses as much as digits as its factorization.

401429429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 401429429 is about 20035.7038558669. The cubic root of 401429429 is about 737.6829332282.

The spelling of 401429429 in words is "four hundred one million, four hundred twenty-nine thousand, four hundred twenty-nine".