43494986 has 4 divisors (see below), whose sum is σ = 65242482. Its totient is φ = 21747492.

The previous prime is 43494967. The next prime is 43494989. The reversal of 43494986 is 68949434.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 43494025 + 961 = 6595^2 + 31^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 43494986.

It is not an unprimeable number, because it can be changed into a prime (43494989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10873745 + ... + 10873748.

Almost surely, 2^43494986 is an apocalyptic number.

43494986 is a deficient number, since it is larger than the sum of its proper divisors (21747496).

43494986 is a wasteful number, since it uses less digits than its factorization.

43494986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21747495.

The product of its digits is 746496, while the sum is 47.

The square root of 43494986 is about 6595.0728578235. The cubic root of 43494986 is about 351.6789697434.

The spelling of 43494986 in words is "forty-three million, four hundred ninety-four thousand, nine hundred eighty-six".