401403401 has 4 divisors (see below), whose sum is σ = 458746752. Its totient is φ = 344060052.

The previous prime is 401403361. The next prime is 401403427. The reversal of 401403401 is 104304104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-401403401 is a prime.

It is a super-2 number, since 2×401403401² = 322249380668733602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401403401.

It is not an unprimeable number, because it can be changed into a prime (401403001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28671665 + ... + 28671678.

It is an arithmetic number, because the mean of its divisors is an integer number (114686688).

Almost surely, 2^401403401 is an apocalyptic number.

It is an amenable number.

401403401 is a deficient number, since it is larger than the sum of its proper divisors (57343351).

401403401 is an equidigital number, since it uses as much as digits as its factorization.

401403401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57343350.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 401403401 is about 20035.0543048927. The cubic root of 401403401 is about 737.6669895156. Note that the first 3 decimals are identical.

Adding to 401403401 its reverse (104304104), we get a palindrome (505707505).

The spelling of 401403401 in words is "four hundred one million, four hundred three thousand, four hundred one".