40901815 has 16 divisors (see below), whose sum is σ = 50738688. Its totient is φ = 31633056.

The previous prime is 40901801. The next prime is 40901821. The reversal of 40901815 is 51810904.

It is a happy number.

40901815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40901815 - 2¹³ = 40893623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21222 + ... + 23068.

It is an arithmetic number, because the mean of its divisors is an integer number (3171168).

Almost surely, 2^40901815 is an apocalyptic number.

40901815 is a deficient number, since it is larger than the sum of its proper divisors (9836873).

40901815 is a wasteful number, since it uses less digits than its factorization.

40901815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 40901815 is about 6395.4526813979. The cubic root of 40901815 is about 344.5462493808.

The spelling of 40901815 in words is "forty million, nine hundred one thousand, eight hundred fifteen".