4731987 has 8 divisors (see below), whose sum is σ = 6794704. Its totient is φ = 2911968.

The previous prime is 4731983. The next prime is 4731989. The reversal of 4731987 is 7891374.

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

It is not a de Polignac number, because 4731987 - 2² = 4731983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 121333 = 4731987 / (4 + 7 + 3 + 1 + 9 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4731983) 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, 60628 + ... + 60705.

It is an arithmetic number, because the mean of its divisors is an integer number (849338).

Almost surely, 2^4731987 is an apocalyptic number.

4731987 is a deficient number, since it is larger than the sum of its proper divisors (2062717).

4731987 is a wasteful number, since it uses less digits than its factorization.

4731987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121349.

The product of its digits is 42336, while the sum is 39.

The square root of 4731987 is about 2175.3130809150. The cubic root of 4731987 is about 167.8860125300.

The spelling of 4731987 in words is "four million, seven hundred thirty-one thousand, nine hundred eighty-seven".