401326653 has 32 divisors (see below), whose sum is σ = 671037696. Its totient is φ = 207687168.

The previous prime is 401326637. The next prime is 401326657. The reversal of 401326653 is 356623104.

It is not a de Polignac number, because 401326653 - 2⁴ = 401326637 is a prime.

It is a super-2 number, since 2×401326653² = 322126164816364818, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 401326653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401326657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 601 + ... + 28337.

It is an arithmetic number, because the mean of its divisors is an integer number (20969928).

Almost surely, 2^401326653 is an apocalyptic number.

It is an amenable number.

401326653 is a deficient number, since it is larger than the sum of its proper divisors (269711043).

401326653 is a wasteful number, since it uses less digits than its factorization.

401326653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27813.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 401326653 is about 20033.1388703817. The cubic root of 401326653 is about 737.6199727451.

Adding to 401326653 its reverse (356623104), we get a palindrome (757949757).

The spelling of 401326653 in words is "four hundred one million, three hundred twenty-six thousand, six hundred fifty-three".