39055987 has 4 divisors (see below), whose sum is σ = 41353416. Its totient is φ = 36758560.

The previous prime is 39055943. The next prime is 39056009. The reversal of 39055987 is 78955093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78955093 = 7 ⋅11279299.

It is a cyclic number.

It is not a de Polignac number, because 39055987 - 2¹¹ = 39053939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39055487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148689 + ... + 1148722.

It is an arithmetic number, because the mean of its divisors is an integer number (10338354).

Almost surely, 2^39055987 is an apocalyptic number.

39055987 is a deficient number, since it is larger than the sum of its proper divisors (2297429).

39055987 is a wasteful number, since it uses less digits than its factorization.

39055987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297428.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 39055987 is about 6249.4789382796. The cubic root of 39055987 is about 339.2833434241.

The spelling of 39055987 in words is "thirty-nine million, fifty-five thousand, nine hundred eighty-seven".