4432947138 has 12 divisors (see below), whose sum is σ = 9604718838. Its totient is φ = 1477649040.

The previous prime is 4432947061. The next prime is 4432947143. The reversal of 4432947138 is 8317492344.

It can be written as a sum of positive squares in only one way, i.e., 4309003449 + 123943689 = 65643^2 + 11133^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4432947093 and 4432947102.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123137403 + ... + 123137438.

Almost surely, 2^4432947138 is an apocalyptic number.

4432947138 is an abundant number, since it is smaller than the sum of its proper divisors (5171771700).

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

4432947138 is a wasteful number, since it uses less digits than its factorization.

4432947138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246274849 (or 246274846 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 4432947138 is about 66580.3810292491. The cubic root of 4432947138 is about 1642.7224188140.

The spelling of 4432947138 in words is "four billion, four hundred thirty-two million, nine hundred forty-seven thousand, one hundred thirty-eight".