40290466 has 4 divisors (see below), whose sum is σ = 60435702. Its totient is φ = 20145232.

The previous prime is 40290463. The next prime is 40290473. The reversal of 40290466 is 66409204.

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., 31416025 + 8874441 = 5605^2 + 2979^2 .

It is not an unprimeable number, because it can be changed into a prime (40290463) by changing a digit.

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, 10072615 + ... + 10072618.

Almost surely, 2^40290466 is an apocalyptic number.

40290466 is a deficient number, since it is larger than the sum of its proper divisors (20145236).

40290466 is a wasteful number, since it uses less digits than its factorization.

40290466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20145235.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 40290466 is about 6347.4771366268. The cubic root of 40290466 is about 342.8210100646.

The spelling of 40290466 in words is "forty million, two hundred ninety thousand, four hundred sixty-six".