63409373 has 2 divisors, whose sum is σ = 63409374. Its totient is φ = 63409372.

The previous prime is 63409349. The next prime is 63409397. The reversal of 63409373 is 37390436.

It is a balanced prime because it is at equal distance from previous prime (63409349) and next prime (63409397).

It can be written as a sum of positive squares in only one way, i.e., 63409369 + 4 = 7963^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 63409373 - 2⁸ = 63409117 is a prime.

It is equal to p_3752099 and since 63409373 and 3752099 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63409343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31704686 + 31704687.

It is an arithmetic number, because the mean of its divisors is an integer number (31704687).

Almost surely, 2^63409373 is an apocalyptic number.

It is an amenable number.

63409373 is a deficient number, since it is larger than the sum of its proper divisors (1).

63409373 is an equidigital number, since it uses as much as digits as its factorization.

63409373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 35.

The square root of 63409373 is about 7963.0002511616. Note that the first 3 decimals coincide. The cubic root of 63409373 is about 398.7657223977.

The spelling of 63409373 in words is "sixty-three million, four hundred nine thousand, three hundred seventy-three".