39461987 has 2 divisors, whose sum is σ = 39461988. Its totient is φ = 39461986.

The previous prime is 39461971. The next prime is 39462023. The reversal of 39461987 is 78916493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39461987 - 2⁴ = 39461971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39461927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19730993 + 19730994.

It is an arithmetic number, because the mean of its divisors is an integer number (19730994).

Almost surely, 2^39461987 is an apocalyptic number.

39461987 is a deficient number, since it is larger than the sum of its proper divisors (1).

39461987 is an equidigital number, since it uses as much as digits as its factorization.

39461987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 39461987 is about 6281.8776651571. The cubic root of 39461987 is about 340.4549474887.

The spelling of 39461987 in words is "thirty-nine million, four hundred sixty-one thousand, nine hundred eighty-seven".