40649306 has 4 divisors (see below), whose sum is σ = 60973962. Its totient is φ = 20324652.

The previous prime is 40649293. The next prime is 40649311. The reversal of 40649306 is 60394604.

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

It can be written as a sum of positive squares in only one way, i.e., 28462225 + 12187081 = 5335^2 + 3491^2 .

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 as a sum of consecutive naturals, namely, 10162325 + ... + 10162328.

Almost surely, 2^40649306 is an apocalyptic number.

40649306 is a deficient number, since it is larger than the sum of its proper divisors (20324656).

40649306 is a wasteful number, since it uses less digits than its factorization.

40649306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20324655.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 40649306 is about 6375.6808263902. The cubic root of 40649306 is about 343.8357619184.

The spelling of 40649306 in words is "forty million, six hundred forty-nine thousand, three hundred six".