47236987 has 4 divisors (see below), whose sum is σ = 53985136. Its totient is φ = 40488840.

The previous prime is 47236979. The next prime is 47236991. The reversal of 47236987 is 78963274.

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

It is not a de Polignac number, because 47236987 - 2³ = 47236979 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47236957) 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, 3374064 + ... + 3374077.

It is an arithmetic number, because the mean of its divisors is an integer number (13496284).

Almost surely, 2^47236987 is an apocalyptic number.

47236987 is a deficient number, since it is larger than the sum of its proper divisors (6748149).

47236987 is an equidigital number, since it uses as much as digits as its factorization.

47236987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748148.

The product of its digits is 508032, while the sum is 46.

The square root of 47236987 is about 6872.9169207841. The cubic root of 47236987 is about 361.4881480274.

The spelling of 47236987 in words is "forty-seven million, two hundred thirty-six thousand, nine hundred eighty-seven".