401864911 has 8 divisors (see below), whose sum is σ = 459453344. Its totient is φ = 344321280.

The previous prime is 401864909. The next prime is 401864923. The reversal of 401864911 is 119468104.

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 401864911 - 2¹ = 401864909 is a prime.

It is a super-2 number, since 2×401864911² = 322990813386075842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401865911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10951 + ... + 30391.

It is an arithmetic number, because the mean of its divisors is an integer number (57431668).

Almost surely, 2^401864911 is an apocalyptic number.

401864911 is a deficient number, since it is larger than the sum of its proper divisors (57588433).

401864911 is a wasteful number, since it uses less digits than its factorization.

401864911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22401.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 401864911 is about 20046.5685592323. The cubic root of 401864911 is about 737.9495899303.

The spelling of 401864911 in words is "four hundred one million, eight hundred sixty-four thousand, nine hundred eleven".