401366045 has 8 divisors (see below), whose sum is σ = 488237496. Its totient is φ = 316694016.

The previous prime is 401365997. The next prime is 401366071. The reversal of 401366045 is 540663104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 109537156 + 291828889 = 10466^2 + 17083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401366045 - 2¹⁰ = 401365021 is a prime.

It is a super-2 number, since 2×401366045² = 322189404157884050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401365999 and 401366017.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 549452 + ... + 550181.

It is an arithmetic number, because the mean of its divisors is an integer number (61029687).

Almost surely, 2^401366045 is an apocalyptic number.

It is an amenable number.

401366045 is a deficient number, since it is larger than the sum of its proper divisors (86871451).

401366045 is a wasteful number, since it uses less digits than its factorization.

401366045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099711.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 401366045 is about 20034.1220171986. The cubic root of 401366045 is about 737.6441055184.

The spelling of 401366045 in words is "four hundred one million, three hundred sixty-six thousand, forty-five".