40375109 has 2 divisors, whose sum is σ = 40375110. Its totient is φ = 40375108.

The previous prime is 40375099. The next prime is 40375121. The reversal of 40375109 is 90157304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32092225 + 8282884 = 5665^2 + 2878^2 .

It is a cyclic number.

It is not a de Polignac number, because 40375109 - 2⁸ = 40374853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40375129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20187554 + 20187555.

It is an arithmetic number, because the mean of its divisors is an integer number (20187555).

Almost surely, 2^40375109 is an apocalyptic number.

It is an amenable number.

40375109 is a deficient number, since it is larger than the sum of its proper divisors (1).

40375109 is an equidigital number, since it uses as much as digits as its factorization.

40375109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 40375109 is about 6354.1410906589. The cubic root of 40375109 is about 343.0609105109.

The spelling of 40375109 in words is "forty million, three hundred seventy-five thousand, one hundred nine".