401039329 has 2 divisors, whose sum is σ = 401039330. Its totient is φ = 401039328.

The previous prime is 401039323. The next prime is 401039363. The reversal of 401039329 is 923930104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311699025 + 89340304 = 17655^2 + 9452^2 .

It is a cyclic number.

It is not a de Polignac number, because 401039329 - 2³ = 401039321 is a prime.

It is equal to p_21388711 and since 401039329 and 21388711 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401039329.

It is not a weakly prime, because it can be changed into another prime (401039321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200519664 + 200519665.

It is an arithmetic number, because the mean of its divisors is an integer number (200519665).

Almost surely, 2^401039329 is an apocalyptic number.

It is an amenable number.

401039329 is a deficient number, since it is larger than the sum of its proper divisors (1).

401039329 is an equidigital number, since it uses as much as digits as its factorization.

401039329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 401039329 is about 20025.9663686924. The cubic root of 401039329 is about 737.4439012773.

The spelling of 401039329 in words is "four hundred one million, thirty-nine thousand, three hundred twenty-nine".