40445345 has 8 divisors (see below), whose sum is σ = 48577320. Its totient is φ = 32327680.

The previous prime is 40445303. The next prime is 40445369. The reversal of 40445345 is 54354404.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 40436881 = 92^2 + 6359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40445345 - 2¹⁰ = 40444321 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4175 + ... + 9915.

It is an arithmetic number, because the mean of its divisors is an integer number (6072165).

Almost surely, 2^40445345 is an apocalyptic number.

It is an amenable number.

40445345 is a deficient number, since it is larger than the sum of its proper divisors (8131975).

40445345 is a wasteful number, since it uses less digits than its factorization.

40445345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7155.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 40445345 is about 6359.6654786239. The cubic root of 40445345 is about 343.2597233297.

Adding to 40445345 its reverse (54354404), we get a palindrome (94799749).

The spelling of 40445345 in words is "forty million, four hundred forty-five thousand, three hundred forty-five".