40000346 has 8 divisors (see below), whose sum is σ = 60263220. Its totient is φ = 19912608.

The previous prime is 40000321. The next prime is 40000349. The reversal of 40000346 is 64300004.

40000346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39627025 + 373321 = 6295^2 + 611^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40000349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43211 + ... + 44126.

Almost surely, 2^40000346 is an apocalyptic number.

40000346 is a deficient number, since it is larger than the sum of its proper divisors (20262874).

40000346 is a wasteful number, since it uses less digits than its factorization.

40000346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87568.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40000346 is about 6324.5826739794. The cubic root of 40000346 is about 341.9961754186.

The spelling of 40000346 in words is "forty million, three hundred forty-six", and thus it is an aban number.