40349018 has 8 divisors (see below), whose sum is σ = 62159412. Its totient is φ = 19629216.

The previous prime is 40349009. The next prime is 40349047. The reversal of 40349018 is 81094304.

It can be written as a sum of positive squares in 2 ways, for example, as 39526369 + 822649 = 6287^2 + 907^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272555 + ... + 272702.

Almost surely, 2^40349018 is an apocalyptic number.

40349018 is a deficient number, since it is larger than the sum of its proper divisors (21810394).

40349018 is a wasteful number, since it uses less digits than its factorization.

40349018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545296.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 40349018 is about 6352.0876883116. The cubic root of 40349018 is about 342.9869975550.

The spelling of 40349018 in words is "forty million, three hundred forty-nine thousand, eighteen".