43858994 has 4 divisors (see below), whose sum is σ = 65788494. Its totient is φ = 21929496.

The previous prime is 43858981. The next prime is 43859009. The reversal of 43858994 is 49985834.

It is a happy number.

43858994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 40005625 + 3853369 = 6325^2 + 1963^2 .

It is a super-2 number, since 2×43858994² = 3847222709384072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10964747 + ... + 10964750.

Almost surely, 2^43858994 is an apocalyptic number.

43858994 is a deficient number, since it is larger than the sum of its proper divisors (21929500).

43858994 is a wasteful number, since it uses less digits than its factorization.

43858994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21929499.

The product of its digits is 1244160, while the sum is 50.

The square root of 43858994 is about 6622.6123244532. The cubic root of 43858994 is about 352.6573085250.

The spelling of 43858994 in words is "forty-three million, eight hundred fifty-eight thousand, nine hundred ninety-four".