401332001 has 6 divisors (see below), whose sum is σ = 466855650. Its totient is φ = 343998816.

The previous prime is 401331979. The next prime is 401332021. The reversal of 401332001 is 100233104.

It can be written as a sum of positive squares in only one way, i.e., 306250000 + 95082001 = 17500^2 + 9751^2 .

It is not a de Polignac number, because 401332001 - 2¹⁸ = 401069857 is a prime.

It is a super-2 number, since 2×401332001² = 322134750053328002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401332021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4095176 + ... + 4095273.

It is an arithmetic number, because the mean of its divisors is an integer number (77809275).

Almost surely, 2^401332001 is an apocalyptic number.

It is an amenable number.

401332001 is a deficient number, since it is larger than the sum of its proper divisors (65523649).

401332001 is an equidigital number, since it uses as much as digits as its factorization.

401332001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8190463 (or 8190456 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 401332001 is about 20033.2723487702. The cubic root of 401332001 is about 737.6232491901.

Adding to 401332001 its reverse (100233104), we get a palindrome (501565105).

The spelling of 401332001 in words is "four hundred one million, three hundred thirty-two thousand, one".