43961138 has 16 divisors (see below), whose sum is σ = 71197056. Its totient is φ = 20237520.

The previous prime is 43961101. The next prime is 43961149. The reversal of 43961138 is 83116934.

It is a junction number, because it is equal to n+sod(n) for n = 43961098 and 43961107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9245 + ... + 13167.

It is an arithmetic number, because the mean of its divisors is an integer number (4449816).

Almost surely, 2^43961138 is an apocalyptic number.

43961138 is a deficient number, since it is larger than the sum of its proper divisors (27235918).

43961138 is a wasteful number, since it uses less digits than its factorization.

43961138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4369.

The product of its digits is 15552, while the sum is 35.

The square root of 43961138 is about 6630.3196001400. The cubic root of 43961138 is about 352.9308662533.

The spelling of 43961138 in words is "forty-three million, nine hundred sixty-one thousand, one hundred thirty-eight".