106478989 has 4 divisors (see below), whose sum is σ = 106501500. Its totient is φ = 106456480.

The previous prime is 106478987. The next prime is 106479001. The reversal of 106478989 is 989874601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 989874601 = 661 ⋅1497541.

It can be written as a sum of positive squares in 2 ways, for example, as 36505764 + 69973225 = 6042^2 + 8365^2 .

It is a cyclic number.

It is not a de Polignac number, because 106478989 - 2¹ = 106478987 is a prime.

It is a super-2 number, since 2×106478989² = 22675550196924242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106478987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114 + ... + 14635.

It is an arithmetic number, because the mean of its divisors is an integer number (26625375).

Almost surely, 2^106478989 is an apocalyptic number.

It is an amenable number.

106478989 is a deficient number, since it is larger than the sum of its proper divisors (22511).

106478989 is an equidigital number, since it uses as much as digits as its factorization.

106478989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22510.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 106478989 is about 10318.8656837852. The cubic root of 106478989 is about 473.9741317103.

The spelling of 106478989 in words is "one hundred six million, four hundred seventy-eight thousand, nine hundred eighty-nine".