401058909 has 6 divisors (see below), whose sum is σ = 579307326. Its totient is φ = 267372600.

The previous prime is 401058901. The next prime is 401058913. The reversal of 401058909 is 909850104.

It can be written as a sum of positive squares in only one way, i.e., 399800025 + 1258884 = 19995^2 + 1122^2 .

It is not a de Polignac number, because 401058909 - 2³ = 401058901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401058901) 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 in 5 ways as a sum of consecutive naturals, for example, 22281042 + ... + 22281059.

It is an arithmetic number, because the mean of its divisors is an integer number (96551221).

Almost surely, 2^401058909 is an apocalyptic number.

It is an amenable number.

401058909 is a deficient number, since it is larger than the sum of its proper divisors (178248417).

401058909 is a wasteful number, since it uses less digits than its factorization.

401058909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44562107 (or 44562104 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 401058909 is about 20026.4552280228. The cubic root of 401058909 is about 737.4559025247.

The spelling of 401058909 in words is "four hundred one million, fifty-eight thousand, nine hundred nine".