39244987 has 2 divisors, whose sum is σ = 39244988. Its totient is φ = 39244986.

The previous prime is 39244981. The next prime is 39244991. The reversal of 39244987 is 78944293.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39244987 - 2³ = 39244979 is a prime.

It is not a weakly prime, because it can be changed into another prime (39244981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19622493 + 19622494.

It is an arithmetic number, because the mean of its divisors is an integer number (19622494).

Almost surely, 2^39244987 is an apocalyptic number.

39244987 is a deficient number, since it is larger than the sum of its proper divisors (1).

39244987 is an equidigital number, since it uses as much as digits as its factorization.

39244987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 39244987 is about 6264.5819493403. The cubic root of 39244987 is about 339.8297504046.

It can be divided in two parts, 3924 and 4987, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 39244987 in words is "thirty-nine million, two hundred forty-four thousand, nine hundred eighty-seven".