404749943 has 16 divisors (see below), whose sum is σ = 443587200. Its totient is φ = 367061760.

The previous prime is 404749879. The next prime is 404749979. The reversal of 404749943 is 349947404.

It is not a de Polignac number, because 404749943 - 2⁶ = 404749879 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404749894 and 404749903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404743943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234323 + ... + 236043.

It is an arithmetic number, because the mean of its divisors is an integer number (27724200).

Almost surely, 2^404749943 is an apocalyptic number.

404749943 is a deficient number, since it is larger than the sum of its proper divisors (38837257).

404749943 is a wasteful number, since it uses less digits than its factorization.

404749943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 404749943 is about 20118.3981221170. The cubic root of 404749943 is about 739.7113209271.

The spelling of 404749943 in words is "four hundred four million, seven hundred forty-nine thousand, nine hundred forty-three".