40906845 has 48 divisors (see below), whose sum is σ = 85812480. Its totient is φ = 17597952.

The previous prime is 40906841. The next prime is 40906871. The reversal of 40906845 is 54860904.

It is not a de Polignac number, because 40906845 - 2² = 40906841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40906841) 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 47 ways as a sum of consecutive naturals, for example, 1536 + ... + 9174.

It is an arithmetic number, because the mean of its divisors is an integer number (1787760).

Almost surely, 2^40906845 is an apocalyptic number.

40906845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40906845 is an abundant number, since it is smaller than the sum of its proper divisors (44905635).

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

40906845 is a wasteful number, since it uses less digits than its factorization.

40906845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7674 (or 7671 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 40906845 is about 6395.8459174686. The cubic root of 40906845 is about 344.5603726057.

The spelling of 40906845 in words is "forty million, nine hundred six thousand, eight hundred forty-five".