406563783449 has 2 divisors, whose sum is σ = 406563783450. Its totient is φ = 406563783448.

The previous prime is 406563783433. The next prime is 406563783559. The reversal of 406563783449 is 944387365604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326991836224 + 79571947225 = 571832^2 + 282085^2 .

It is a cyclic number.

It is not a de Polignac number, because 406563783449 - 2⁴ = 406563783433 is a prime.

It is a super-2 number, since 2×406563783449² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (406563786449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203281891724 + 203281891725.

It is an arithmetic number, because the mean of its divisors is an integer number (203281891725).

Almost surely, 2^406563783449 is an apocalyptic number.

It is an amenable number.

406563783449 is a deficient number, since it is larger than the sum of its proper divisors (1).

406563783449 is an equidigital number, since it uses as much as digits as its factorization.

406563783449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52254720, while the sum is 59.

The spelling of 406563783449 in words is "four hundred six billion, five hundred sixty-three million, seven hundred eighty-three thousand, four hundred forty-nine".