63949123 has 4 divisors (see below), whose sum is σ = 73084720. Its totient is φ = 54813528.

The previous prime is 63949099. The next prime is 63949129. The reversal of 63949123 is 32194936.

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

It is not a de Polignac number, because 63949123 - 2¹³ = 63940931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63949129) 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, 4567788 + ... + 4567801.

It is an arithmetic number, because the mean of its divisors is an integer number (18271180).

Almost surely, 2^63949123 is an apocalyptic number.

63949123 is a deficient number, since it is larger than the sum of its proper divisors (9135597).

63949123 is an equidigital number, since it uses as much as digits as its factorization.

63949123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9135596.

The product of its digits is 34992, while the sum is 37.

The square root of 63949123 is about 7996.8195552982. The cubic root of 63949123 is about 399.8939781509.

The spelling of 63949123 in words is "sixty-three million, nine hundred forty-nine thousand, one hundred twenty-three".