402776047291 has 2 divisors, whose sum is σ = 402776047292. Its totient is φ = 402776047290.

The previous prime is 402776047279. The next prime is 402776047307. The reversal of 402776047291 is 192740677204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402776047291 - 2¹⁷ = 402775916219 is a prime.

It is not a weakly prime, because it can be changed into another prime (402776047241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201388023645 + 201388023646.

It is an arithmetic number, because the mean of its divisors is an integer number (201388023646).

Almost surely, 2^402776047291 is an apocalyptic number.

402776047291 is a deficient number, since it is larger than the sum of its proper divisors (1).

402776047291 is an equidigital number, since it uses as much as digits as its factorization.

402776047291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 402776047291 in words is "four hundred two billion, seven hundred seventy-six million, forty-seven thousand, two hundred ninety-one".