406319761 has 2 divisors, whose sum is σ = 406319762. Its totient is φ = 406319760.

The previous prime is 406319741. The next prime is 406319791. The reversal of 406319761 is 167913604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351337536 + 54982225 = 18744^2 + 7415^2 .

It is a cyclic number.

It is not a de Polignac number, because 406319761 - 2¹⁹ = 405795473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406319761.

It is not a weakly prime, because it can be changed into another prime (406319701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203159880 + 203159881.

It is an arithmetic number, because the mean of its divisors is an integer number (203159881).

Almost surely, 2^406319761 is an apocalyptic number.

It is an amenable number.

406319761 is a deficient number, since it is larger than the sum of its proper divisors (1).

406319761 is an equidigital number, since it uses as much as digits as its factorization.

406319761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 406319761 is about 20157.3748538841. The cubic root of 406319761 is about 740.6664078423. Note that the first 3 decimals are identical.

The spelling of 406319761 in words is "four hundred six million, three hundred nineteen thousand, seven hundred sixty-one".