40909992 has 32 divisors (see below), whose sum is σ = 103574400. Its totient is φ = 13463424.

The previous prime is 40909969. The next prime is 40909997. The reversal of 40909992 is 29990904.

It is not an unprimeable number, because it can be changed into a prime (40909997) 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 7 ways as a sum of consecutive naturals, for example, 8893 + ... + 12684.

It is an arithmetic number, because the mean of its divisors is an integer number (3236700).

Almost surely, 2^40909992 is an apocalyptic number.

It is an amenable number.

40909992 is an abundant number, since it is smaller than the sum of its proper divisors (62664408).

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

40909992 is a wasteful number, since it uses less digits than its factorization.

40909992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21665 (or 21661 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 40909992 is about 6396.0919317971. The cubic root of 40909992 is about 344.5692081579.

The spelling of 40909992 in words is "forty million, nine hundred nine thousand, nine hundred ninety-two".