404749953 has 10 divisors (see below), whose sum is σ = 604626594. Its totient is φ = 269833248.

The previous prime is 404749879. The next prime is 404749979. The reversal of 404749953 is 359947404.

It is a happy number.

404749953 is a `hidden beast` number, since 40 + 474 + 99 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 234916929 + 169833024 = 15327^2 + 13032^2 .

It is not a de Polignac number, because 404749953 - 2⁹ = 404749441 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 404749899 and 404749908.

It is not an unprimeable number, because it can be changed into a prime (404749453) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2498376 + ... + 2498537.

Almost surely, 2^404749953 is an apocalyptic number.

It is an amenable number.

404749953 is a deficient number, since it is larger than the sum of its proper divisors (199876641).

404749953 is an equidigital number, since it uses as much as digits as its factorization.

404749953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4996925 (or 4996916 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 404749953 is about 20118.3983706457. The cubic root of 404749953 is about 739.7113270190.

The spelling of 404749953 in words is "four hundred four million, seven hundred forty-nine thousand, nine hundred fifty-three".