63849091 has 4 divisors (see below), whose sum is σ = 63942184. Its totient is φ = 63756000.

The previous prime is 63849083. The next prime is 63849103. The reversal of 63849091 is 19094836.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63849091 - 2³ = 63849083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63849001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45510 + ... + 46891.

It is an arithmetic number, because the mean of its divisors is an integer number (15985546).

Almost surely, 2^63849091 is an apocalyptic number.

63849091 is a deficient number, since it is larger than the sum of its proper divisors (93093).

63849091 is an equidigital number, since it uses as much as digits as its factorization.

63849091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93092.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 63849091 is about 7990.5626209923. The cubic root of 63849091 is about 399.6853588172.

It can be divided in two parts, 638 and 49091, that added together give a square (49729 = 223²).

The spelling of 63849091 in words is "sixty-three million, eight hundred forty-nine thousand, ninety-one".