40343785 has 8 divisors (see below), whose sum is σ = 50082120. Its totient is φ = 31161984.

The previous prime is 40343767. The next prime is 40343837. The reversal of 40343785 is 58734304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3825936 + 36517849 = 1956^2 + 6043^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40343785 - 2⁷ = 40343657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40343785.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138972 + ... + 139261.

It is an arithmetic number, because the mean of its divisors is an integer number (6260265).

Almost surely, 2^40343785 is an apocalyptic number.

It is an amenable number.

40343785 is a deficient number, since it is larger than the sum of its proper divisors (9738335).

40343785 is a wasteful number, since it uses less digits than its factorization.

40343785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278267.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 40343785 is about 6351.6757631353. The cubic root of 40343785 is about 342.9721692011.

The spelling of 40343785 in words is "forty million, three hundred forty-three thousand, seven hundred eighty-five".