289475241978 has 64 divisors (see below), whose sum is σ = 655716483072. Its totient is φ = 84525819840.

The previous prime is 289475241907. The next prime is 289475241983. The reversal of 289475241978 is 879142574982.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407428 + ... + 863103.

It is an arithmetic number, because the mean of its divisors is an integer number (10245570048).

Almost surely, 2^289475241978 is an apocalyptic number.

289475241978 is an abundant number, since it is smaller than the sum of its proper divisors (366241241094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289475241978 is a wasteful number, since it uses less digits than its factorization.

289475241978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270699.

The product of its digits is 81285120, while the sum is 66.

The spelling of 289475241978 in words is "two hundred eighty-nine billion, four hundred seventy-five million, two hundred forty-one thousand, nine hundred seventy-eight".