106386491 has 4 divisors (see below), whose sum is σ = 111985800. Its totient is φ = 100787184.

The previous prime is 106386487. The next prime is 106386517. The reversal of 106386491 is 194683601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 106386491 - 2² = 106386487 is a prime.

It is a super-2 number, since 2×106386491² = 22636170934586162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106386421) 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, 2799626 + ... + 2799663.

It is an arithmetic number, because the mean of its divisors is an integer number (27996450).

Almost surely, 2^106386491 is an apocalyptic number.

106386491 is a deficient number, since it is larger than the sum of its proper divisors (5599309).

106386491 is an equidigital number, since it uses as much as digits as its factorization.

106386491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599308.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 106386491 is about 10314.3827251077. The cubic root of 106386491 is about 473.8368452816.

The spelling of 106386491 in words is "one hundred six million, three hundred eighty-six thousand, four hundred ninety-one".