40903109 has 4 divisors (see below), whose sum is σ = 44049516. Its totient is φ = 37756704.

The previous prime is 40903103. The next prime is 40903127. The reversal of 40903109 is 90130904.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10543009 + 30360100 = 3247^2 + 5510^2 .

It is a cyclic number.

It is not a de Polignac number, because 40903109 - 2⁸ = 40902853 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 (40903103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1573184 + ... + 1573209.

It is an arithmetic number, because the mean of its divisors is an integer number (11012379).

Almost surely, 2^40903109 is an apocalyptic number.

It is an amenable number.

40903109 is a deficient number, since it is larger than the sum of its proper divisors (3146407).

40903109 is a wasteful number, since it uses less digits than its factorization.

40903109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146406.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 40903109 is about 6395.5538462279. The cubic root of 40903109 is about 344.5498827823.

The spelling of 40903109 in words is "forty million, nine hundred three thousand, one hundred nine".