40109837 has 2 divisors, whose sum is σ = 40109838. Its totient is φ = 40109836.

The previous prime is 40109831. The next prime is 40109863. The reversal of 40109837 is 73890104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24790441 + 15319396 = 4979^2 + 3914^2 .

It is a cyclic number.

It is not a de Polignac number, because 40109837 - 2²⁰ = 39061261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40109831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20054918 + 20054919.

It is an arithmetic number, because the mean of its divisors is an integer number (20054919).

Almost surely, 2^40109837 is an apocalyptic number.

It is an amenable number.

40109837 is a deficient number, since it is larger than the sum of its proper divisors (1).

40109837 is an equidigital number, since it uses as much as digits as its factorization.

40109837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 40109837 is about 6333.2327448152. The cubic root of 40109837 is about 342.3079342985.

The spelling of 40109837 in words is "forty million, one hundred nine thousand, eight hundred thirty-seven".