63869289 has 48 divisors (see below), whose sum is σ = 101914176. Its totient is φ = 35251200.

The previous prime is 63869243. The next prime is 63869303. The reversal of 63869289 is 98296836.

It is not a de Polignac number, because 63869289 - 2⁷ = 63869161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (63869219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 352779 + ... + 352959.

It is an arithmetic number, because the mean of its divisors is an integer number (2123212).

Almost surely, 2^63869289 is an apocalyptic number.

It is an amenable number.

63869289 is a deficient number, since it is larger than the sum of its proper divisors (38044887).

63869289 is a wasteful number, since it uses less digits than its factorization.

63869289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 249 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 63869289 is about 7991.8263870032. The cubic root of 63869289 is about 399.7274998179.

The spelling of 63869289 in words is "sixty-three million, eight hundred sixty-nine thousand, two hundred eighty-nine".