63949133 has 4 divisors (see below), whose sum is σ = 64044828. Its totient is φ = 63853440.

The previous prime is 63949129. The next prime is 63949139. The reversal of 63949133 is 33194936.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27019204 + 36929929 = 5198^2 + 6077^2 .

It is a cyclic number.

It is not a de Polignac number, because 63949133 - 2² = 63949129 is a prime.

It is a super-2 number, since 2×63949133² = 8178983222903378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63949139) 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, 46838 + ... + 48183.

It is an arithmetic number, because the mean of its divisors is an integer number (16011207).

Almost surely, 2^63949133 is an apocalyptic number.

It is an amenable number.

63949133 is a deficient number, since it is larger than the sum of its proper divisors (95695).

63949133 is an equidigital number, since it uses as much as digits as its factorization.

63949133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95694.

The product of its digits is 52488, while the sum is 38.

The square root of 63949133 is about 7996.8201805468. The cubic root of 63949133 is about 399.8939989953.

The spelling of 63949133 in words is "sixty-three million, nine hundred forty-nine thousand, one hundred thirty-three".