40812447 has 16 divisors (see below), whose sum is σ = 59480960. Its totient is φ = 24738912.

The previous prime is 40812407. The next prime is 40812451. The reversal of 40812447 is 74421804.

It is not a de Polignac number, because 40812447 - 2⁷ = 40812319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40812407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5197 + ... + 10422.

It is an arithmetic number, because the mean of its divisors is an integer number (3717560).

Almost surely, 2^40812447 is an apocalyptic number.

40812447 is a deficient number, since it is larger than the sum of its proper divisors (18668513).

40812447 is a wasteful number, since it uses less digits than its factorization.

40812447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15702.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 40812447 is about 6388.4620214884. The cubic root of 40812447 is about 344.2951288029.

The spelling of 40812447 in words is "forty million, eight hundred twelve thousand, four hundred forty-seven".