401894973 has 16 divisors (see below), whose sum is σ = 626737600. Its totient is φ = 253828080.

The previous prime is 401894971. The next prime is 401894981. The reversal of 401894973 is 379498104.

It is not a de Polignac number, because 401894973 - 2¹ = 401894971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401894971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391198 + ... + 392223.

It is an arithmetic number, because the mean of its divisors is an integer number (39171100).

Almost surely, 2^401894973 is an apocalyptic number.

It is an amenable number.

401894973 is a deficient number, since it is larger than the sum of its proper divisors (224842627).

401894973 is a wasteful number, since it uses less digits than its factorization.

401894973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783449 (or 783443 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 401894973 is about 20047.3183493454. The cubic root of 401894973 is about 737.9679905477.

The spelling of 401894973 in words is "four hundred one million, eight hundred ninety-four thousand, nine hundred seventy-three".