948021987 has 16 divisors (see below), whose sum is σ = 1379866752. Its totient is φ = 574173120.

The previous prime is 948021973. The next prime is 948022003. The reversal of 948021987 is 789120849.

It is not a de Polignac number, because 948021987 - 2¹⁵ = 947989219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (948021917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44863 + ... + 62519.

It is an arithmetic number, because the mean of its divisors is an integer number (86241672).

Almost surely, 2^948021987 is an apocalyptic number.

948021987 is a deficient number, since it is larger than the sum of its proper divisors (431844765).

948021987 is a wasteful number, since it uses less digits than its factorization.

948021987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19298.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 948021987 is about 30789.9656868922. The cubic root of 948021987 is about 982.3648244256.

The spelling of 948021987 in words is "nine hundred forty-eight million, twenty-one thousand, nine hundred eighty-seven".