39894887 has 4 divisors (see below), whose sum is σ = 40282320. Its totient is φ = 39507456.

The previous prime is 39894859. The next prime is 39894901. The reversal of 39894887 is 78849893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39894887 - 2²² = 35700583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39894847) 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, 193562 + ... + 193767.

It is an arithmetic number, because the mean of its divisors is an integer number (10070580).

Almost surely, 2^39894887 is an apocalyptic number.

39894887 is a deficient number, since it is larger than the sum of its proper divisors (387433).

39894887 is a wasteful number, since it uses less digits than its factorization.

39894887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387432.

The product of its digits is 3483648, while the sum is 56.

The square root of 39894887 is about 6316.2399416108. The cubic root of 39894887 is about 341.6953587115.

The spelling of 39894887 in words is "thirty-nine million, eight hundred ninety-four thousand, eight hundred eighty-seven".