63319409 has 2 divisors, whose sum is σ = 63319410. Its totient is φ = 63319408.

The previous prime is 63319393. The next prime is 63319423. The reversal of 63319409 is 90491336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53333809 + 9985600 = 7303^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 63319409 - 2⁴ = 63319393 is a prime.

It is a super-2 number, since 2×63319409² = 8018695112218562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63319429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31659704 + 31659705.

It is an arithmetic number, because the mean of its divisors is an integer number (31659705).

Almost surely, 2^63319409 is an apocalyptic number.

It is an amenable number.

63319409 is a deficient number, since it is larger than the sum of its proper divisors (1).

63319409 is an equidigital number, since it uses as much as digits as its factorization.

63319409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 63319409 is about 7957.3493702363. The cubic root of 63319409 is about 398.5770460913.

The spelling of 63319409 in words is "sixty-three million, three hundred nineteen thousand, four hundred nine".