40616239 has 2 divisors, whose sum is σ = 40616240. Its totient is φ = 40616238.

The previous prime is 40616227. The next prime is 40616297. The reversal of 40616239 is 93261604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40616239 - 2²¹ = 38519087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40616239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40616339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20308119 + 20308120.

It is an arithmetic number, because the mean of its divisors is an integer number (20308120).

Almost surely, 2^40616239 is an apocalyptic number.

40616239 is a deficient number, since it is larger than the sum of its proper divisors (1).

40616239 is an equidigital number, since it uses as much as digits as its factorization.

40616239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 40616239 is about 6373.0870855497. The cubic root of 40616239 is about 343.7425032415.

The spelling of 40616239 in words is "forty million, six hundred sixteen thousand, two hundred thirty-nine".