289477992540 has 48 divisors (see below), whose sum is σ = 884223688320. Its totient is φ = 70176482880.

The previous prime is 289477992533. The next prime is 289477992593. The reversal of 289477992540 is 45299774982.

It is a super-3 number, since 3×289477992540³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219300850 + ... + 219302169.

It is an arithmetic number, because the mean of its divisors is an integer number (18421326840).

Almost surely, 2^289477992540 is an apocalyptic number.

289477992540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289477992540 is an abundant number, since it is smaller than the sum of its proper divisors (594745695780).

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

289477992540 is a wasteful number, since it uses less digits than its factorization.

289477992540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438603042 (or 438603040 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 66.

The spelling of 289477992540 in words is "two hundred eighty-nine billion, four hundred seventy-seven million, nine hundred ninety-two thousand, five hundred forty".