404776949497 has 4 divisors (see below), whose sum is σ = 404859242880. Its totient is φ = 404694656116.

The previous prime is 404776949459. The next prime is 404776949509. The reversal of 404776949497 is 794949677404.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404776949497 - 2¹⁵ = 404776916729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404776949897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41139313 + ... + 41149150.

It is an arithmetic number, because the mean of its divisors is an integer number (101214810720).

Almost surely, 2^404776949497 is an apocalyptic number.

It is an amenable number.

404776949497 is a deficient number, since it is larger than the sum of its proper divisors (82293383).

404776949497 is an equidigital number, since it uses as much as digits as its factorization.

404776949497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82293382.

The product of its (nonzero) digits is 384072192, while the sum is 70.

The spelling of 404776949497 in words is "four hundred four billion, seven hundred seventy-six million, nine hundred forty-nine thousand, four hundred ninety-seven".