401919111 has 32 divisors (see below), whose sum is σ = 650707200. Its totient is φ = 243159840.

The previous prime is 401919109. The next prime is 401919113. The reversal of 401919111 is 111919104.

It is an interprime number because it is at equal distance from previous prime (401919109) and next prime (401919113).

It is not a de Polignac number, because 401919111 - 2¹ = 401919109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401919113) 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 31 ways as a sum of consecutive naturals, for example, 280545 + ... + 281973.

It is an arithmetic number, because the mean of its divisors is an integer number (20334600).

Almost surely, 2^401919111 is an apocalyptic number.

401919111 is a deficient number, since it is larger than the sum of its proper divisors (248788089).

401919111 is a wasteful number, since it uses less digits than its factorization.

401919111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The square root of 401919111 is about 20047.9203659631. The cubic root of 401919111 is about 737.9827644861.

The spelling of 401919111 in words is "four hundred one million, nine hundred nineteen thousand, one hundred eleven".