4961987 has 4 divisors (see below), whose sum is σ = 5133120. Its totient is φ = 4790856.

The previous prime is 4961969. The next prime is 4962037. The reversal of 4961987 is 7891694.

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 4961987 - 2¹² = 4957891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4961917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85523 + ... + 85580.

It is an arithmetic number, because the mean of its divisors is an integer number (1283280).

Almost surely, 2^4961987 is an apocalyptic number.

4961987 is a deficient number, since it is larger than the sum of its proper divisors (171133).

4961987 is a wasteful number, since it uses less digits than its factorization.

4961987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171132.

The product of its digits is 108864, while the sum is 44.

The square root of 4961987 is about 2227.5517951329. The cubic root of 4961987 is about 170.5631497257.

The spelling of 4961987 in words is "four million, nine hundred sixty-one thousand, nine hundred eighty-seven".