401321943 has 36 divisors (see below), whose sum is σ = 651445704. Its totient is φ = 235936800.

The previous prime is 401321929. The next prime is 401322013. The reversal of 401321943 is 349123104.

401321943 is a `hidden beast` number, since 401 + 3 + 219 + 43 = 666.

It is not a de Polignac number, because 401321943 - 2⁴ = 401321927 is a prime.

It is a super-2 number, since 2×401321943² = 322118603866590498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401323943) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1212288 + ... + 1212618.

It is an arithmetic number, because the mean of its divisors is an integer number (18095714).

Almost surely, 2^401321943 is an apocalyptic number.

401321943 is a deficient number, since it is larger than the sum of its proper divisors (250123761).

401321943 is a wasteful number, since it uses less digits than its factorization.

401321943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 401321943 is about 20033.0213148192. The cubic root of 401321943 is about 737.6170871459.

The spelling of 401321943 in words is "four hundred one million, three hundred twenty-one thousand, nine hundred forty-three".