402232417 has 2 divisors, whose sum is σ = 402232418. Its totient is φ = 402232416.

The previous prime is 402232403. The next prime is 402232421. The reversal of 402232417 is 714232204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395055376 + 7177041 = 19876^2 + 2679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402232417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402232391 and 402232400.

It is not a weakly prime, because it can be changed into another prime (402232447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201116208 + 201116209.

It is an arithmetic number, because the mean of its divisors is an integer number (201116209).

Almost surely, 2^402232417 is an apocalyptic number.

It is an amenable number.

402232417 is a deficient number, since it is larger than the sum of its proper divisors (1).

402232417 is an equidigital number, since it uses as much as digits as its factorization.

402232417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 402232417 is about 20055.7327714546. The cubic root of 402232417 is about 738.1744733553.

The spelling of 402232417 in words is "four hundred two million, two hundred thirty-two thousand, four hundred seventeen".