4263639955 has 4 divisors (see below), whose sum is σ = 5116367952. Its totient is φ = 3410911960.

The previous prime is 4263639949. The next prime is 4263639959. The reversal of 4263639955 is 5599363624.

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

It is not a de Polignac number, because 4263639955 - 2¹¹ = 4263637907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4263639959) 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, 426363991 + ... + 426364000.

It is an arithmetic number, because the mean of its divisors is an integer number (1279091988).

Almost surely, 2^4263639955 is an apocalyptic number.

4263639955 is a deficient number, since it is larger than the sum of its proper divisors (852727997).

4263639955 is an equidigital number, since it uses as much as digits as its factorization.

4263639955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852727996.

The product of its digits is 5248800, while the sum is 52.

The square root of 4263639955 is about 65296.5539289785. The cubic root of 4263639955 is about 1621.5369191009.

The spelling of 4263639955 in words is "four billion, two hundred sixty-three million, six hundred thirty-nine thousand, nine hundred fifty-five".