63849437 has 2 divisors, whose sum is σ = 63849438. Its totient is φ = 63849436.

The previous prime is 63849427. The next prime is 63849451. The reversal of 63849437 is 73494836.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62900761 + 948676 = 7931^2 + 974^2 .

It is a cyclic number.

It is not a de Polignac number, because 63849437 - 2⁴ = 63849421 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 (63849427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31924718 + 31924719.

It is an arithmetic number, because the mean of its divisors is an integer number (31924719).

Almost surely, 2^63849437 is an apocalyptic number.

It is an amenable number.

63849437 is a deficient number, since it is larger than the sum of its proper divisors (1).

63849437 is an equidigital number, since it uses as much as digits as its factorization.

63849437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The square root of 63849437 is about 7990.5842715036. The cubic root of 63849437 is about 399.6860807846.

The spelling of 63849437 in words is "sixty-three million, eight hundred forty-nine thousand, four hundred thirty-seven".