402422417 has 2 divisors, whose sum is σ = 402422418. Its totient is φ = 402422416.

The previous prime is 402422411. The next prime is 402422443. The reversal of 402422417 is 714224204.

It is an a-pointer prime, because the next prime (402422443) can be obtained adding 402422417 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391406656 + 11015761 = 19784^2 + 3319^2 .

It is a cyclic number.

It is not a de Polignac number, because 402422417 - 2⁴ = 402422401 is a prime.

It is not a weakly prime, because it can be changed into another prime (402422411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201211208 + 201211209.

It is an arithmetic number, because the mean of its divisors is an integer number (201211209).

Almost surely, 2^402422417 is an apocalyptic number.

It is an amenable number.

402422417 is a deficient number, since it is larger than the sum of its proper divisors (1).

402422417 is an equidigital number, since it uses as much as digits as its factorization.

402422417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 402422417 is about 20060.4690124633. The cubic root of 402422417 is about 738.2906840056.

The spelling of 402422417 in words is "four hundred two million, four hundred twenty-two thousand, four hundred seventeen".