4263639954 has 64 divisors (see below), whose sum is σ = 9906585600. Its totient is φ = 1198162368.

The previous prime is 4263639949. The next prime is 4263639959. The reversal of 4263639954 is 4599363624.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4263639949) and next prime (4263639959).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4263639897 and 4263639906.

It is not an unprimeable number, because it can be changed into a prime (4263639959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 916767 + ... + 921405.

It is an arithmetic number, because the mean of its divisors is an integer number (154790400).

Almost surely, 2^4263639954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4263639954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4953292800).

4263639954 is an abundant number, since it is smaller than the sum of its proper divisors (5642945646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4263639954 is a wasteful number, since it uses less digits than its factorization.

4263639954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007.

The product of its digits is 4199040, while the sum is 51.

The square root of 4263639954 is about 65296.5539213211. The cubic root of 4263639954 is about 1621.5369189741.

The spelling of 4263639954 in words is "four billion, two hundred sixty-three million, six hundred thirty-nine thousand, nine hundred fifty-four".