401441491 has 4 divisors (see below), whose sum is σ = 437936184. Its totient is φ = 364946800.

The previous prime is 401441479. The next prime is 401441497. The reversal of 401441491 is 194144104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401441491 - 2⁷ = 401441363 is a prime.

It is a super-2 number, since 2×401441491² = 322310541392606162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401441497) 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, 18247330 + ... + 18247351.

It is an arithmetic number, because the mean of its divisors is an integer number (109484046).

Almost surely, 2^401441491 is an apocalyptic number.

401441491 is a deficient number, since it is larger than the sum of its proper divisors (36494693).

401441491 is a wasteful number, since it uses less digits than its factorization.

401441491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36494692.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 401441491 is about 20036.0048662402. The cubic root of 401441491 is about 737.6903216937.

Adding to 401441491 its reverse (194144104), we get a palindrome (595585595).

The spelling of 401441491 in words is "four hundred one million, four hundred forty-one thousand, four hundred ninety-one".