400465780049 has 2 divisors, whose sum is σ = 400465780050. Its totient is φ = 400465780048.

The previous prime is 400465780037. The next prime is 400465780067. The reversal of 400465780049 is 940087564004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374739865600 + 25725914449 = 612160^2 + 160393^2 .

It is a cyclic number.

It is not a de Polignac number, because 400465780049 - 2³² = 396170812753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400465779985 and 400465780012.

It is not a weakly prime, because it can be changed into another prime (400465780069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200232890024 + 200232890025.

It is an arithmetic number, because the mean of its divisors is an integer number (200232890025).

Almost surely, 2^400465780049 is an apocalyptic number.

It is an amenable number.

400465780049 is a deficient number, since it is larger than the sum of its proper divisors (1).

400465780049 is an equidigital number, since it uses as much as digits as its factorization.

400465780049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 400465780049 in words is "four hundred billion, four hundred sixty-five million, seven hundred eighty thousand, forty-nine".