40106239 has 2 divisors, whose sum is σ = 40106240. Its totient is φ = 40106238.

The previous prime is 40106221. The next prime is 40106257. The reversal of 40106239 is 93260104.

It is a balanced prime because it is at equal distance from previous prime (40106221) and next prime (40106257).

It is a cyclic number.

It is not a de Polignac number, because 40106239 - 2⁹ = 40105727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40100239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20053119 + 20053120.

It is an arithmetic number, because the mean of its divisors is an integer number (20053120).

Almost surely, 2^40106239 is an apocalyptic number.

40106239 is a deficient number, since it is larger than the sum of its proper divisors (1).

40106239 is an equidigital number, since it uses as much as digits as its factorization.

40106239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 40106239 is about 6332.9486813016. The cubic root of 40106239 is about 342.2976985652.

The spelling of 40106239 in words is "forty million, one hundred six thousand, two hundred thirty-nine".