40981205 has 16 divisors (see below), whose sum is σ = 51133680. Its totient is φ = 31492608.

The previous prime is 40981189. The next prime is 40981211. The reversal of 40981205 is 50218904.

40981205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 9721924 + 31259281 = 3118^2 + 5591^2 .

It is not a de Polignac number, because 40981205 - 2⁴ = 40981189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 33179 + ... + 34391.

It is an arithmetic number, because the mean of its divisors is an integer number (3195855).

Almost surely, 2^40981205 is an apocalyptic number.

It is an amenable number.

40981205 is a deficient number, since it is larger than the sum of its proper divisors (10152475).

40981205 is a wasteful number, since it uses less digits than its factorization.

40981205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 40981205 is about 6401.6564262697. The cubic root of 40981205 is about 344.7690255434.

The spelling of 40981205 in words is "forty million, nine hundred eighty-one thousand, two hundred five".