105489479 has 8 divisors (see below), whose sum is σ = 110647488. Its totient is φ = 100452960.

The previous prime is 105489401. The next prime is 105489487. The reversal of 105489479 is 974984501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105489479 is a prime.

It is a super-2 number, since 2×105489479² = 22256060359382882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105489499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28592 + ... + 32069.

It is an arithmetic number, because the mean of its divisors is an integer number (13830936).

Almost surely, 2^105489479 is an apocalyptic number.

105489479 is a deficient number, since it is larger than the sum of its proper divisors (5158009).

105489479 is an equidigital number, since it uses as much as digits as its factorization.

105489479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60745.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 105489479 is about 10270.8071250511. The cubic root of 105489479 is about 472.5013450500.

The spelling of 105489479 in words is "one hundred five million, four hundred eighty-nine thousand, four hundred seventy-nine".