401363921 has 8 divisors (see below), whose sum is σ = 460724160. Its totient is φ = 342509328.

The previous prime is 401363917. The next prime is 401363927. The reversal of 401363921 is 129363104.

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

It is not a de Polignac number, because 401363921 - 2² = 401363917 is a prime.

It is a super-2 number, since 2×401363921² = 322185994160988482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401363927) 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 7 ways as a sum of consecutive naturals, for example, 124706 + ... + 127883.

It is an arithmetic number, because the mean of its divisors is an integer number (57590520).

Almost surely, 2^401363921 is an apocalyptic number.

It is an amenable number.

401363921 is a deficient number, since it is larger than the sum of its proper divisors (59360239).

401363921 is a wasteful number, since it uses less digits than its factorization.

401363921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252823.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 401363921 is about 20034.0690075681. The cubic root of 401363921 is about 737.6428043297.

The spelling of 401363921 in words is "four hundred one million, three hundred sixty-three thousand, nine hundred twenty-one".