404981383 has 4 divisors (see below), whose sum is σ = 406487160. Its totient is φ = 403475608.

The previous prime is 404981363. The next prime is 404981431. The reversal of 404981383 is 383189404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404981383 is a prime.

It is a Smith number, since the sum of its digits (40) 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (404981323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752485 + ... + 753022.

It is an arithmetic number, because the mean of its divisors is an integer number (101621790).

Almost surely, 2^404981383 is an apocalyptic number.

404981383 is a deficient number, since it is larger than the sum of its proper divisors (1505777).

404981383 is a wasteful number, since it uses less digits than its factorization.

404981383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505776.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 404981383 is about 20124.1492490987. The cubic root of 404981383 is about 739.8522854661.

The spelling of 404981383 in words is "four hundred four million, nine hundred eighty-one thousand, three hundred eighty-three".