40147244 has 12 divisors (see below), whose sum is σ = 70302624. Its totient is φ = 20060784.

The previous prime is 40147243. The next prime is 40147249. The reversal of 40147244 is 44274104.

It is a super-2 number, since 2×40147244² = 3223602401591072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40147243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8909 + ... + 12635.

It is an arithmetic number, because the mean of its divisors is an integer number (5858552).

Almost surely, 2^40147244 is an apocalyptic number.

It is an amenable number.

40147244 is a deficient number, since it is larger than the sum of its proper divisors (30155380).

40147244 is a wasteful number, since it uses less digits than its factorization.

40147244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424 (or 6422 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 40147244 is about 6336.1852876948. The cubic root of 40147244 is about 342.4143149713.

The spelling of 40147244 in words is "forty million, one hundred forty-seven thousand, two hundred forty-four".