405797049 has 24 divisors (see below), whose sum is σ = 686230272. Its totient is φ = 226226880.

The previous prime is 405797047. The next prime is 405797053. The reversal of 405797049 is 940797504.

405797049 is a `hidden beast` number, since 4 + 0 + 579 + 70 + 4 + 9 = 666.

It is not a de Polignac number, because 405797049 - 2¹ = 405797047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405796995 and 405797013.

It is not an unprimeable number, because it can be changed into a prime (405797047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75969 + ... + 81134.

It is an arithmetic number, because the mean of its divisors is an integer number (28592928).

Almost surely, 2^405797049 is an apocalyptic number.

It is an amenable number.

405797049 is a deficient number, since it is larger than the sum of its proper divisors (280433223).

405797049 is a wasteful number, since it uses less digits than its factorization.

405797049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157157 (or 157154 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 405797049 is about 20144.4049055811. The cubic root of 405797049 is about 740.3486602664.

The spelling of 405797049 in words is "four hundred five million, seven hundred ninety-seven thousand, forty-nine".