39242987 has 8 divisors (see below), whose sum is σ = 47487456. Its totient is φ = 31658112.

The previous prime is 39242971. The next prime is 39242989. The reversal of 39242987 is 78924293.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39242987 - 2⁴ = 39242971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39242989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164768 + ... + 165005.

It is an arithmetic number, because the mean of its divisors is an integer number (5935932).

Almost surely, 2^39242987 is an apocalyptic number.

39242987 is a deficient number, since it is larger than the sum of its proper divisors (8244469).

39242987 is a wasteful number, since it uses less digits than its factorization.

39242987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329797.

The product of its digits is 217728, while the sum is 44.

The square root of 39242987 is about 6264.4223197355. The cubic root of 39242987 is about 339.8239775140.

The spelling of 39242987 in words is "thirty-nine million, two hundred forty-two thousand, nine hundred eighty-seven".