404757453857 has 4 divisors (see below), whose sum is σ = 404759554116. Its totient is φ = 404755353600.

The previous prime is 404757453833. The next prime is 404757453883. The reversal of 404757453857 is 758354757404.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1330498576 + 403426955281 = 36476^2 + 635159^2 .

It is a cyclic number.

It is not a de Polignac number, because 404757453857 - 2²² = 404753259553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404757453796 and 404757453805.

It is not an unprimeable number, because it can be changed into a prime (404757453157) 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, 728144 + ... + 1157457.

It is an arithmetic number, because the mean of its divisors is an integer number (101189888529).

Almost surely, 2^404757453857 is an apocalyptic number.

It is an amenable number.

404757453857 is a deficient number, since it is larger than the sum of its proper divisors (2100259).

404757453857 is a wasteful number, since it uses less digits than its factorization.

404757453857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100258.

The product of its (nonzero) digits is 65856000, while the sum is 59.

The spelling of 404757453857 in words is "four hundred four billion, seven hundred fifty-seven million, four hundred fifty-three thousand, eight hundred fifty-seven".