40443698 has 4 divisors (see below), whose sum is σ = 60665550. Its totient is φ = 20221848.

The previous prime is 40443673. The next prime is 40443703. The reversal of 40443698 is 89634404.

40443698 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., 38031889 + 2411809 = 6167^2 + 1553^2 .

It is a Curzon number.

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, 10110923 + ... + 10110926.

Almost surely, 2^40443698 is an apocalyptic number.

40443698 is a deficient number, since it is larger than the sum of its proper divisors (20221852).

40443698 is a wasteful number, since it uses less digits than its factorization.

40443698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20221851.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 40443698 is about 6359.5359893627. The cubic root of 40443698 is about 343.2550639023.

The spelling of 40443698 in words is "forty million, four hundred forty-three thousand, six hundred ninety-eight".