40353889 has 4 divisors (see below), whose sum is σ = 40906756. Its totient is φ = 39801024.

The previous prime is 40353851. The next prime is 40353917. The reversal of 40353889 is 98835304.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24830289 + 15523600 = 4983^2 + 3940^2 .

It is a cyclic number.

It is not a de Polignac number, because 40353889 - 2¹¹ = 40351841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40353839) 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, 276324 + ... + 276469.

It is an arithmetic number, because the mean of its divisors is an integer number (10226689).

Almost surely, 2^40353889 is an apocalyptic number.

It is an amenable number.

40353889 is a deficient number, since it is larger than the sum of its proper divisors (552867).

40353889 is an equidigital number, since it uses as much as digits as its factorization.

40353889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552866.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 40353889 is about 6352.4710939917. The cubic root of 40353889 is about 343.0007989850. Note that the first 3 decimals are identical.

The spelling of 40353889 in words is "forty million, three hundred fifty-three thousand, eight hundred eighty-nine".