40844890 has 16 divisors (see below), whose sum is σ = 73698408. Its totient is φ = 16298496.

The previous prime is 40844873. The next prime is 40844891. The reversal of 40844890 is 9844804.

It can be written as a sum of positive squares in 4 ways, for example, as 28376929 + 12467961 = 5327^2 + 3531^2 .

It is a super-2 number, since 2×40844890² = 3336610078224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40844891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387 + ... + 9046.

Almost surely, 2^40844890 is an apocalyptic number.

40844890 is a deficient number, since it is larger than the sum of its proper divisors (32853518).

40844890 is a wasteful number, since it uses less digits than its factorization.

40844890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9873.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 40844890 is about 6391.0007041151. Note that the first 3 decimals coincide. The cubic root of 40844890 is about 344.3863347071.

The spelling of 40844890 in words is "forty million, eight hundred forty-four thousand, eight hundred ninety".