43861986 has 48 divisors (see below), whose sum is σ = 112641984. Its totient is φ = 12531024.

The previous prime is 43861969. The next prime is 43862003. The reversal of 43861986 is 68916834.

It is an interprime number because it is at equal distance from previous prime (43861969) and next prime (43862003).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3045 + ... + 9848.

It is an arithmetic number, because the mean of its divisors is an integer number (2346708).

Almost surely, 2^43861986 is an apocalyptic number.

43861986 is an abundant number, since it is smaller than the sum of its proper divisors (68779998).

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

43861986 is a wasteful number, since it uses less digits than its factorization.

43861986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917 (or 12905 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 43861986 is about 6622.8382133342. The cubic root of 43861986 is about 352.6653276075.

The spelling of 43861986 in words is "forty-three million, eight hundred sixty-one thousand, nine hundred eighty-six".