40906451 has 4 divisors (see below), whose sum is σ = 41090112. Its totient is φ = 40722792.

The previous prime is 40906441. The next prime is 40906457. The reversal of 40906451 is 15460904.

40906451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40906451 - 2²² = 36712147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40906457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91496 + ... + 91941.

It is an arithmetic number, because the mean of its divisors is an integer number (10272528).

Almost surely, 2^40906451 is an apocalyptic number.

40906451 is a deficient number, since it is larger than the sum of its proper divisors (183661).

40906451 is a wasteful number, since it uses less digits than its factorization.

40906451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183660.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40906451 is about 6395.8151161521. The cubic root of 40906451 is about 344.5592663750.

The spelling of 40906451 in words is "forty million, nine hundred six thousand, four hundred fifty-one".