402222277 has 2 divisors, whose sum is σ = 402222278. Its totient is φ = 402222276.

The previous prime is 402222253. The next prime is 402222281. The reversal of 402222277 is 772222204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270569601 + 131652676 = 16449^2 + 11474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402222277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402222217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201111138 + 201111139.

It is an arithmetic number, because the mean of its divisors is an integer number (201111139).

Almost surely, 2^402222277 is an apocalyptic number.

It is an amenable number.

402222277 is a deficient number, since it is larger than the sum of its proper divisors (1).

402222277 is an equidigital number, since it uses as much as digits as its factorization.

402222277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 402222277 is about 20055.4799743113. The cubic root of 402222277 is about 738.1682703479.

The spelling of 402222277 in words is "four hundred two million, two hundred twenty-two thousand, two hundred seventy-seven".