40208946 has 32 divisors (see below), whose sum is σ = 83462400. Its totient is φ = 12904320.

The previous prime is 40208941. The next prime is 40208951. The reversal of 40208946 is 64980204.

It is an interprime number because it is at equal distance from previous prime (40208941) and next prime (40208951).

It is not an unprimeable number, because it can be changed into a prime (40208941) 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 in 15 ways as a sum of consecutive naturals, for example, 18400 + ... + 20468.

It is an arithmetic number, because the mean of its divisors is an integer number (2608200).

Almost surely, 2^40208946 is an apocalyptic number.

40208946 is an abundant number, since it is smaller than the sum of its proper divisors (43253454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40208946 is a wasteful number, since it uses less digits than its factorization.

40208946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 40208946 is about 6341.0524363074. The cubic root of 40208946 is about 342.5896431844.

The spelling of 40208946 in words is "forty million, two hundred eight thousand, nine hundred forty-six".