401403265 has 16 divisors (see below), whose sum is σ = 493309440. Its totient is φ = 313410880.

The previous prime is 401403263. The next prime is 401403281. The reversal of 401403265 is 562304104.

It is not a de Polignac number, because 401403265 - 2¹ = 401403263 is a prime.

It is a super-2 number, since 2×401403265² = 322249162305320450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401403263) 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 15 ways as a sum of consecutive naturals, for example, 89220 + ... + 93610.

It is an arithmetic number, because the mean of its divisors is an integer number (30831840).

Almost surely, 2^401403265 is an apocalyptic number.

It is an amenable number.

401403265 is a deficient number, since it is larger than the sum of its proper divisors (91906175).

401403265 is a wasteful number, since it uses less digits than its factorization.

401403265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 401403265 is about 20035.0509108412. The cubic root of 401403265 is about 737.6669062056. Note that the first 3 decimals are identical.

Adding to 401403265 its reverse (562304104), we get a palindrome (963707369).

The spelling of 401403265 in words is "four hundred one million, four hundred three thousand, two hundred sixty-five".